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Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

mailscmctech 20880 16
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 20002361
    mailscmctech
    Level 4  
    Posts: 6
    Rate: 10
    Hello from Ukraine!
    I have a lot of experience and a lot of documents and other things on modern systems on a chip.
    Basically, I work with Zuhai JieLi chips. AC690X, AC692X, AC695X, AC696X... This is almost 50% of the market for non-other Bluetooth SoCs in audio equipment.
    Both dongles and methods for bypassing the protection against flashing have already been developed....
    I am currently in Warsaw. Because of the war, I left the equipment at home. Is anyone here doing something like me? I need to buy equipment, but I can't find it here. How do I order from China to Warsaw?
    Is it worth creating a topic here on the site on these chips?
    I also worked on chips from Beken Corporation, RDA Micro, Appotech Group/Buildwin, MvSilicon, and Second Leader after JL - Bluetrum.. (AB chips).




    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
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  • #2 20003948
    gulson
    System Administrator
    Posts: 29229
    Help: 148
    Rate: 5983
    Board Language: polish
    Hey nice to meet you. Great that you found a safe place in Warsaw! You and your friends are welcome in Poland. We need more professional electronics engineers!
    There is no problem to order from aliexpress by standard post mail or to Inpost parcel locker.
    The problem is only the time that you need to wait, sometimes one month.
    That's why maybe try something local www.allegro.pl or tme.eu
  • #3 20004224
    Chivo
    Level 27  
    Posts: 1324
    Help: 81
    Rate: 130
    Board Language: polish
    Hello. What IDE software do you use to design pcb boards?
  • #4 20004823
    Citizen75
    Level 30  
    Posts: 2366
    Help: 155
    Rate: 449
    Board Language: polish
    This program from the screenshot above is Sprint Layout .
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  • #5 20106030
    ditomek
    Level 22  
    Posts: 590
    Help: 24
    Rate: 230
    Board Language: polish
    Hi.
    I have mp3 player module based on JL chip. I can't read markings, but it looks like LQFP 48. The module itself is equipped with 128x64 lcd, a few buttons, BT50, USB and SD card connector. Can you tell if it's possible to replace this small, blue lcd screen with something bigger? I'm not sure but maybe this is SPI SP7565 lcd.
    Why?
    I planned to use an old cassette deck to build a standallone mp3 player. Most of the functions/buttons fits perfectly.
    Is it possible to read data from serial port (if it has been programmed). Pins PA8/PA7?
    Thanks.
    BTW
    I love this small player from video. It has everything I need
  • #6 20125824
    tzok
    VIP Meritorious for electroda.pl
    Posts: 38661
    Help: 3162
    Rate: 6407
    Board Language: polish
    mailscmctech wrote:
    Both dongles and methods for bypassing the protection against flashing have already been developed....
    I would be more cautious with such statements as we are an EU country and as such (at least officially) we take intellectual property seriously, even to an exaggeration.
  • #7 20126260
    nmoshrefi
    Level 1  
    Posts: 1
    Rate: 3
    Hello

    This is Nader looking for Engineers who are professional in designing BT Audio Devices. We have some BT Audio Amplifier projects with MvSilicon BP1048 and TI Amplifier Chip TPA3251, also JL AC695X with Yamaha YDA138. If you are interested, please let me know; we can start business and send you all parts, prototype PCBs, and components you need from China.

    My Email: nmoshrefi(_at_)gmail.com

    Best Regards
    Nader
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  • #8 20623295
    mailscmctech
    Level 4  
    Posts: 6
    Rate: 10
    Hello. Sorry for such a long silence. Didn't see your message right away. If you still need it and are interested - my contacts
    +38zero9748zero258zero - viber/whatsapp/telegram
    mail.usmi.tech(malpa)gmail.com

    Added after 12 [minutes]:

    I've been busy moving around and making development boards. (there will be more and different types)
    Soon it will all be available for purchase.

    Added after 1 [hours] 20 [minutes]:

    I have my own forum. (see the address and postal address below in the photos.)
    (sorry for using a rus hosting server, I'm still looking for cross platform hosting. Later it will have an international domain, hosting and built in translator like on this great Polish radio forum.)
    The site is actively developing both software and hardware. there are a very large number of public SDKs out there.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    I am mainly concerned only with JL chips,
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    But there is also software and schemes for other companies. I almost do not deal with them, since I have a priority on JL. but who wants to - I will give everything I need, and I will help in any way I can.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Added after 15 [minutes]:

    I am busy designing development boards for different chip series. (at the moment there are about 15 different series of chips, + different form factors.)
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Soon it will be put into production and sale.
    There is also a database of firmware from original devices.
    Individual development under the order is also possible.
    On the forum, we freely share various developments,
    The commercial part - only the sale of boards, and individual development of programs, well, the base of the original firmware.

    Added after 1 [hours] 2 [minutes]:

    I will describe the chips a little. There are the simplest ones without bluetooth and in SOP 16 for audio.
    There are BLE bluetooth chips without audio, with low consumption, for example for IoT.
    There are video codecs, processors. Audio codecs.
    I for example use audi direction chips.
    For example
    **** AC690x Sustem on Chip *******************************************
    SOP16-QSSOP24-QFN32-SSOP28-TQFP48
    BT4.2 -RX-TX. BLE 4.2+BR+EDR+BLE
    CPU - RISC32+DSP 192-240MHz
    512-1024KB FLASH+ 128KB RAM
    PMU,UART,i2C,i2S,SPI,PAP,PWM,GPIO,ADC,DAC,WDT,USB,SD,AUX,LVD,TOUCH_KEY.
    SBC,AAC,MP3,MP2,MP1,WMA,WAV,FLAC,APE,F1A.
    Built in Stereo FM Radio. 88.5-108MHz.
    ****************************************************************************
    **** AC692x Sustem on Chip *******************************************
    SOP16-QSSOP24-QFN32-SSOP28-TQFP48
    BT5.0 -RX-TX. BLE 5.0+BR+EDR+BLE
    CPU - RISC32+DSP 192-240MHz
    512-1024KB FLASH+ 128KB RAM
    PMU,UART,i2C,i2S,SPI,PAP,PWM,GPIO,ADC,DAC,WDT,USB,SD,AUX,LVD,TOUCH_KEY.
    MP3,SBC,AAC,WAV,FLAC,APE,WMA,F1A,NWT,AMR,M4A,DTS.
    Built in Stereo FM Radio. 88.5-108MHz.
    **************************************************************************************
    **** AC695x Sustem on Chip *******************************************
    SOP16-QSSOP24-QFN20-QFN32-SSOP28-TQFP48
    BT5.1 -RX-TX. BLE 5.1+BR+EDR+BLE
    CPU - RISC32+DSP 192-480MHz
    256-1024KB FLASH+ 128KB RAM
    PMU,UART,i2C,i2S,SPI,PAP,PWM,GPIO,ADC,DAC,WDT,USB,SD,AUX,LVD,TOUCH_KEY.
    G729,MP3,WMA,WAV,FLAC,APE,M4A,ALAC,AMR,DTS,MIDI,G726,MTY,
    Built in Stereo FM Radio. 88.5-108MHz.
    Built in Stereo FM Radio TRANSMITTER 88.5-108MHz.
    *************************************************************************************************

    Added after 36 [minutes]:

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    There are also schemes and firmware of the original dongle-programmers for self-assembly .. There are also home-made options on different microcontrollers.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    I am engaged in reverse engineering (not chips.) of boards and devices. . Even for interest, I etch the case of microcircuits with acid and examine them under a microscope. (there are pictures)))
    I also try to adhere to standardization and the maximum possible compatibility and universality.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Well, in short, I was tired, went to rest.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
  • #9 20623874
    mailscmctech
    Level 4  
    Posts: 6
    Rate: 10
    Hello. Sorry for such a long silence. Didn't see your message right away. If you still need it and are interested - my contacts
    +38zero9748zero258zero - viber/whatsapp/telegram
    mail.usmi.tech(malpa)gmail.com

    Added after 12 [minutes]:

    I've been busy moving around and making development boards. (there will be more and different types)
    Soon it will all be available for purchase.

    Added after 1 [hours] 20 [minutes]:

    I have my own forum. (see the address and postal address below in the photos.)
    (sorry for using a rus hosting server, I'm still looking for cross platform hosting. Later it will have an international domain, hosting and built in translator like on this great Polish radio forum.)
    The site is actively developing both software and hardware. there are a very large number of public SDKs out there.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    I am mainly concerned only with JL chips,
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    But there is also software and schemes for other companies. I almost do not deal with them, since I have a priority on JL. but who wants to - I will give everything I need, and I will help in any way I can.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Added after 15 [minutes]:

    I am busy designing development boards for different chip series. (at the moment there are about 15 different series of chips, + different form factors.)
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw

    Soon it will be put into production and sale.
    There is also a database of firmware from original devices.
    Individual development under the order is also possible.
    On the forum, we freely share various developments,
    The commercial part - only the sale of boards, and individual development of programs, well, the base of the original firmware.

    Added after 1 [hours] 2 [minutes]:

    I will describe the chips a little. There are the simplest ones without bluetooth and in SOP 16 for audio.
    There are BLE bluetooth chips without audio, with low consumption, for example for IoT.
    There are video codecs, processors. Audio codecs.
    I for example use audi direction chips.
    For example
    **** AC690x Sustem on Chip *******************************************
    SOP16-QSSOP24-QFN32-SSOP28-TQFP48
    BT4.2 -RX-TX. BLE 4.2+BR+EDR+BLE
    CPU - RISC32+DSP 192-240MHz
    512-1024KB FLASH+ 128KB RAM
    PMU,UART,i2C,i2S,SPI,PAP,PWM,GPIO,ADC,DAC,WDT,USB,SD,AUX,LVD,TOUCH_KEY.
    SBC,AAC,MP3,MP2,MP1,WMA,WAV,FLAC,APE,F1A.
    Built in Stereo FM Radio. 88.5-108MHz.
    ****************************************************************************
    **** AC692x Sustem on Chip *******************************************
    SOP16-QSSOP24-QFN32-SSOP28-TQFP48
    BT5.0 -RX-TX. BLE 5.0+BR+EDR+BLE
    CPU - RISC32+DSP 192-240MHz
    512-1024KB FLASH+ 128KB RAM
    PMU,UART,i2C,i2S,SPI,PAP,PWM,GPIO,ADC,DAC,WDT,USB,SD,AUX,LVD,TOUCH_KEY.
    MP3,SBC,AAC,WAV,FLAC,APE,WMA,F1A,NWT,AMR,M4A,DTS.
    Built in Stereo FM Radio. 88.5-108MHz.
    **************************************************************************************
    **** AC695x Sustem on Chip *******************************************
    SOP16-QSSOP24-QFN20-QFN32-SSOP28-TQFP48
    BT5.1 -RX-TX. BLE 5.1+BR+EDR+BLE
    CPU - RISC32+DSP 192-480MHz
    256-1024KB FLASH+ 128KB RAM
    PMU,UART,i2C,i2S,SPI,PAP,PWM,GPIO,ADC,DAC,WDT,USB,SD,AUX,LVD,TOUCH_KEY.
    G729,MP3,WMA,WAV,FLAC,APE,M4A,ALAC,AMR,DTS,MIDI,G726,MTY,
    Built in Stereo FM Radio. 88.5-108MHz.
    Built in Stereo FM Radio TRANSMITTER 88.5-108MHz.
    *************************************************************************************************

    Added after 36 [minutes]:

    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    There are also schemes and firmware of the original dongle-programmers for self-assembly .. There are also home-made options on different microcontrollers.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    I am engaged in reverse engineering (not chips.) of boards and devices. . Even for interest, I etch the case of microcircuits with acid and examine them under a microscope. (there are pictures)))
    I also try to adhere to standardization and the maximum possible compatibility and universality.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
    Well, in short, I was tired, went to rest.
    Zuhai JieLi Chip Expertise: AC690X, AC692X, AC695X, AC696X | Seeking Assistance in Warsaw
  • #10 20652953
    IvanovichPeter
    Level 1  
    Posts: 1

    I wouldn't be as optimistic about orders from AliExpress (there are quality issues, long shipping times, and considering taxes, the price is not as attractive). I can recommend the guys from Latvia (I have ordered from them several times - everything was fast, of good quality, and at an excellent price). For those interested, here is their website: https://gnss.store/
  • #11 20738383
    Anonymous
    Level 1  
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  • #12 20739123
    mailscmctech
    Level 4  
    Posts: 6
    Rate: 10

    ? We didn't agree on anything...
    I don't even remember you. What were you interested in?
    I remembered you, you wrote about the AT1846 chip and asked about BLE audio support.
    I told you that the chips I work with (69 series) do not support your requests regarding BLE audio. And we didn't agree on anything, you talked for two hours about nothing, although I told you that it didn't suit your needs. And now you dare to talk and accuse me of something, although we have not agreed on anything? Are you okay with your head?
    All this time I have been fulfilling many orders from other clients because they know what they need, unlike you.
    Please either formulate a clear technical specification or pass by and don't waste my time.
  • #13 20744086
    voha888
    Level 2  
    Posts: 2
    Rate: 1
    >>20002361
    Hello! I'm also from Ukraine. I came across devices for streamers. They allow to apply effects and mix sound. I was very interested in the board where the microcontroller is soldered, the markings on the microcontroller are erased, there is a Bluetooth antenna on the board, but this device does not have a Bluetooth function. By searching, I was able to identify that this is an mvsilicon BP1048B2 chip (I'm not sure). Can you please suggest any programs for programming this chip? Or configuration of functions?
  • #14 20744566
    mailscmctech
    Level 4  
    Posts: 6
    Rate: 10

    https://usmi.mybb.ru/viewtopic.php?id=47
    Unfortunately, I have not worked with new chips from MVsilicon. I have a topic on them on my website, you can join the topic, there is a manual and SDK.
  • #15 20975385
    megamiha2
    Level 1  
    Posts: 1

    Greetings to all. I am the owner of Up2stream mini v4 devices on the BP1048B2 chip. One device is working, the second chip gets very hot, with increased power consumption, it goes into reboot. I want to restore the device, but I don’t know how to read and flash the bootloader. The Chinese sell chips, but without a bootloader, as people who have tried to buy write. I would be grateful for any help!
  • #16 21311189
    aminzahmatkesh31
    Level 1  
    Posts: 1
    Hello
    I am also working on Jieli chips like AC6921. In the pictures you posted, I saw a picture in the download section of various SDKs. Is it possible for me to access that address?

Topic summary

✨ The discussion centers on expertise with Zhuhai JieLi Bluetooth SoCs, specifically models AC690X, AC692X, AC695X, and AC696X, which dominate nearly half the market for non-other Bluetooth audio chips. The original poster, experienced in these chips and others from Beken Corporation, RDA Micro, Appotech Group/Buildwin, MvSilicon, and Second Leader (Bluetrum), seeks advice on sourcing development equipment in Warsaw due to displacement from Ukraine. Responses highlight ordering options from AliExpress, local Polish suppliers like Allegro and TME, and recommend a Latvian supplier (gnss.store) for better quality and shipping. Discussion includes software tools such as Sprint Layout for PCB design and references to SDK availability for JieLi chips. Users inquire about hardware modifications, such as replacing small LCDs on JL chip-based MP3 modules and reading data via serial ports. Intellectual property concerns regarding flashing protections are noted. A business opportunity involving MvSilicon BP1048 and TI TPA3251 amplifier chips combined with JL AC695X and Yamaha YDA138 is mentioned. Challenges with chip bootloader flashing and overheating in BP1048B2-based devices are raised. The original poster shares contact information and a dedicated forum for JieLi chip development, emphasizing ongoing hardware and software projects. Official SDK documentation links for JieLi chips are provided. The conversation also includes a dispute over communication reliability and clarifications on BLE audio support limitations in the JL 69 series chips.
Generated by the language model.

FAQ

TL;DR: Working with JL AC69xx (e.g., AC695x up to 480 MHz) and related audio SoCs? "I am mainly concerned only with JL chips." This FAQ helps with tools, SDKs, flashing, LCD swaps, BLE Audio, and sourcing in Warsaw. [Elektroda, mailscmctech, post #20623295] Why it matters: It consolidates real-world answers for engineers, repairers, and makers building or fixing JL-based Bluetooth audio gear.

Quick Facts

What’s the practical difference between AC690x, AC692x, and AC695x for audio projects?

AC690x targets BT 4.2 with 192–240 MHz CPU. AC692x moves to BT 5.0 with similar CPU. AC695x upgrades to BT 5.1 and 192–480 MHz, and uniquely adds an FM transmitter. All expose UART, I2C, I2S, SPI, PAP, USB, and SD. Choose AC695x when you need more DSP headroom, codec breadth, or FM TX. Use AC692x or AC690x for cost‑sensitive designs without TX needs. [Elektroda, mailscmctech, post #20623295]

Do JL AC69xx chips support BLE Audio (LE Audio)?

No. As the engineer clarified, "the chips I work with (69 series) do not support your requests regarding BLE audio." These parts support classic BR/EDR Bluetooth and BLE for control, not LE Audio streams. If you need LE Audio, pick a newer platform that explicitly supports LC3 over BLE. [Elektroda, mailscmctech, post #20739123]

How can I order JL tools and parts to Warsaw quickly?

You can order via AliExpress to post or InPost parcel lockers, but shipping may take about one month. For speed, try local marketplaces like Allegro or distributors like TME. How‑To: 1. Check local stock first (Allegro/TME). 2. If unavailable, use AliExpress with tracked post/InPost. 3. Plan lead time buffers for ~30 days. [Elektroda, gulson, post #20003948]

Which PCB design tool was shown in the forum screenshots?

Sprint‑Layout 6.0. It’s lightweight and efficient for quick single or double‑sided boards, often used for small audio modules and adapters. If you need full schematics‑to‑layout flow or 4‑layer impedance control, consider migrating to a larger EDA later. [Elektroda, Citizen75, post #20004823]

Can I swap a 128×64 LCD for a bigger one on a JL module?

Yes, if the new display uses the same controller and interface (SPI or PAP) and you update firmware parameters. AC69xx supports SPI/PAP, so match voltage, pinout, and timing. If the controller differs, you must rework the display driver. Without firmware access, only a drop‑in with the same controller is realistic. [Elektroda, mailscmctech, post #20623295]

Can I read serial data on PA8/PA7 from a JL MP3/BT module?

Many AC69xx designs expose UART, but firmware decides function and pin mapping. If PA7/PA8 are assigned as UART TX/RX in firmware, you can read data with proper 3.3 V levels. Otherwise, the pins may be GPIO or unused. Check schematics and firmware configuration before connecting. [Elektroda, mailscmctech, post #20623295]

Where can I get SDKs, dev boards, and flashing dongles for JL chips?

The engineer maintains a forum with public SDKs, a firmware database, and upcoming dev boards. Original dongle‑programmer schematics and DIY variants exist. Quote: “There is also a database of firmware from original devices.” For custom work, they offer contract development. [Elektroda, mailscmctech, post #20623295]

Is bypassing JL flash protections legal in the EU?

Expect strict IP enforcement. As noted, "we take intellectual property seriously," so avoid sharing or using circumvention methods without clear rights. Focus on open SDKs, your own binaries, or vendor‑provided tools. When in doubt, obtain written permission and keep compliance records. [Elektroda, tzok, post #20125824]

I need engineers for BT audio using MvSilicon BP1048 and TI TPA3251. Any leads?

A business request in the thread sought engineers for BP1048 and JL AC695x with Yamaha YDA138. Provide a clear technical specification, parts list, and acceptance tests when reaching out. It shortens time‑to‑quote and reduces iteration. [Elektroda, nmoshrefi, post #20126260]

My BP1048B2 overheats and reboots—can flashing a bootloader fix it?

Users report chips sold without bootloaders, which prevents normal startup. Your symptoms—overheating, high current, reboot loops—also indicate possible SoC damage or power faults. You’ll need the correct bootloader and vendor tool, or a donor board to extract firmware. Validate power rails and thermal condition first. [Elektroda, megamiha2, post #20975385]

Any official docs or apps to control JL‑based devices?

See the shared Jieli documentation link for the Android “Jieli Home” app and related materials. It helps with app‑side control and device interaction. Use it alongside SDK notes for your SoC series. [Elektroda, angrodnav, post #21364429]

Is it worth starting a dedicated JL topic or project log here?

Yes. Community interest exists, and moderators welcomed contributions and engineers. Local buying tips and logistics help EU builders move faster. Share your work, tools, and results to grow collective knowledge. [Elektroda, gulson, post #20003948]
Generated by the language model.
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