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Flashing Geeni Current + Charge with OpenBK on WB2S Module

zac1 1560 16
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How do I flash OpenBK onto a Geeni Current + Charge outlet that uses a WB2S module, and which UART pins should I use?

Use TX1/RX1 for flashing on the Beken/WB2S platform, not TX2/RX2, and you can usually flash the WB2S in-circuit if TX1/RX1 are not used by the board [#20932547][#21052468] Power the board from a safe supply while flashing, for example by feeding 5V into the input of the on-board AMS1117-3.3V regulator, and do not connect the unit to mains during the process [#20932547] In this thread the device was identified as a WB2S module with a BK7231T, and the extracted Tuya config showed three channels: relays on P6, P7, and P8, with the all-pair/toggle button on P24 [#20935622] The flasher can also detect GPIOs from the 2 MB flash dump in most cases, so keeping a stock firmware backup is useful [#20932607] The original poster eventually flashed it successfully and got the outlet online in Home Assistant via MQTT [#20938449]
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  • #1 20932022
    zac1
    Level 2  
    Posts: 4
    Hi folks,
    I have a few of these Geeni Current + Charge outlets, and I'm going to attempt to get OpenBK on them.
    Packaging of Geeni Current + Charge outlet with USB ports.

    I've pulled the thing apart, and it looks like it's a WB2S module.
    Close-up of the inside of a Geeni Current + Charge smart outlet with a visible WB2S module.
    Close-up of the WB2S module with model and serial number markings. Close-up of a WB2S electronic module with visible pins and printed labels.

    Going to probe around a bit to see if I can figure out which pins to use for flashing - but guessing that the RX2 and TX2 pins will be the business.
    Will update as I progress!

    (Impetus for the hacking is that we recently had an internet outage, and we were unable to control the plugs. Hilarious! So now I'm going to look at doing a more direct integration with HASS, bypassing the whole Tuya cloud stuff.)
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  • #2 20932547
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
    Help: 655
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    Welcome to forum. On Beken platform, we use TX1/RX1 for flashing, see our flash tool readme:
    https://github.com/openshwprojects/BK7231GUIFlashTool
    See our tutorials here:
    https://www.youtube.com/@elektrodacom/videos
    Sample tutorial for CB2S (WB2S is similiar):



    Keep in mind that you can also flash WB2S in-circuit, as long as RX1/TX1 are not used for anything on the board and you power the board correctly from a safe power supply, for example, by providing 5V at the input of on-board AMS1117-3.3V LDO. Do not connect board to mains while flashing.
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  • #3 20932600
    zac1
    Level 2  
    Posts: 4

    Thanks!

    I am getting console output on tx2/rx2, and I don't think tx1/rx1 is used for anything - it's soldered to the board, but I don't see any leads connected to it. Looks like just the GPIOs and power have leads on the PCB - so good sign, I think!

    And yeah, not putting it anywhere near mains power till it's all put back together. I don't want to die. :)
  • #4 20932607
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
    Help: 655
    Rate: 12630
    Our flasher should be able to detect GPIO from the 2MB flash dump in most cases. Btw, if you want, please consider posting 2MB firmware backup here as well, it may come useful someday.
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  • #5 20935622
    zac1
    Level 2  
    Posts: 4
    My soldering skills are so weak, lol! But, I finally got some patch wires soldered to the appropriate pads/pins.

    Stock firmware attached.

    Going to try flashing the new firmware now - wish me luck! Thanks for the help!

    Extracted Tuya config:
    Code: text Expand Select all Copy to clipboard
    Device configuration, as extracted from Tuya: 
- Relay (channel 3) on P6
- Pair/Toggle All Button on P24
- Relay (channel 2) on P7
- Relay (channel 1) on P8
Device seems to be using WB2S module, which is using BK7231T.
And the Tuya section starts, as usual, at 2023424



    Also got this JSON config:
    Code: text Expand Select all Copy to clipboard
    {
	"rl1_lv":"1",
	"netled_lv":"0",
	"bt_type":"0",
	"rl3_pin":"6",
	"rl3_lv":"1",
	"rand_dpid":"43",
	"net_trig":"4",
	"led_dp":"40",
	"jv":"1.1.0",
	"lock_dp":"41",
	"total_bt_pin":"24",
	"netled_":"qBgw_wsmpin",
	"total_stat":"2",
	"reset_t":"3",
	"rl2_lv":"1",
	"ch_flag1":"1",
	"ch_flag2":"1",
	"ch_flag3":"1",
	"inch_dp":"44",
	"module":"WB2S",
	"ch_cddpid1":"9",
	"init_conf":"38",
	"rl2_pin":"7",
	"ch_cddpid2":"10",
	"ch_cddpid3":"11",
	"total_bt_lv":"0",
	"cyc_dpid":"42",
	"ch_num":"3",
	"reuse_led_m":"1",
	"rl1_pin":"8",
	"ch_dpid3":"3",
	"ch_dpid1":"1",
	"ch_dpid2":"2",
	"crc":"68",
	"}uid":"f9818e028a68595f",
	"psk_key":"gzT0zYCNcN1moK1jBclJlUaxA41KWB17ws5Vm",
	"auth_key":"izjZJNmrDAqiFL8IikOfUN9NMRNA4FUD",
	"ap_s@Cgw_diountry_code":"null",
	"bt_mac":"null",
	"bt_hid":"null",
	"prod_test":"false "
}
    Attachments:
    • Geeni Current and Charge.bin (2 MB) You must be logged in to download this attachment.
  • #6 20938449
    zac1
    Level 2  
    Posts: 4
    Great success!
    Outlet is now online, reporting in to HA via MQTT, and is fully controllable.

    Now just have to do the other ones I have installed and I'll be free of Tuya's cloud!
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  • #7 20990224
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
    Help: 655
    Rate: 12630
    Here is OBK template:
    Code: JSON
    Log in, to see the code
    Helpful post? Buy me a coffee.
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  • #8 21049220
    123qweasd1
    Level 4  
    Posts: 17

    p.kaczmarek2 wrote:
    https://www.elektroda.com/rtvforum/topic4031764.html


    Thanks for the work on this device;
    Looking to buy some of these units to power Home Assistant wall tablets and manage USB charging to protect the batteries.
    Some questions:

    I understand you didn't have to desolder the WB2S (kept in circuit) right?
    Would you mind confirming which connections/pinout used on device/programmer?

    Are the USB ports controlled by their own relay (common relay for both USB ports or separate)?
    Same question for 120v outlets.

    Thank you!
  • #9 21050044
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
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    123qweasd1 wrote:

    Are the USB ports controlled by their own relay (common relay for both USB ports or separate)?

    Extracted config shows 3 channels, so 2 relays for mains and one toggle for all USB ports together.


    123qweasd1 wrote:

    Would you mind confirming which connections/pinout used on device/programmer?

    Have you watched tutorial?
    Electronic setup showing configuration and connections for USB to TTL communication.


    123qweasd1 wrote:

    understand you didn't have to desolder the WB2S (kept in circuit) right?

    Usually WB2S does not have to be desoldered, but it depends on the device. I am not sure about that one from post.
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  • #10 21052347
    123qweasd1
    Level 4  
    Posts: 17

    Thanks for the feedback and guidelines.

    @zac1, would you mind confirming if you had to desolder or proceeded "in circuit" ?

    Thx
  • #11 21052468
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
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    I would say that most likely he didn't because RX1 is P10 and TX1 is P11 and they don't seem to be used in the template:
    Screenshot of a table showing information about I/O ports.
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  • #12 21908940
    gomelkiev
    Level 6  
    Posts: 15
    Bought this version from Amazon:
    https://www.amazon.com/dp/B0DYWGSPF3
    Flashing Geeni Current + Charge with OpenBK on WB2S Module
    Flashing Geeni Current + Charge with OpenBK on WB2S Module


    Here is info
    Code: JSON
    Log in, to see the code


    Code: text Expand Select all Copy to clipboard
    Device configuration, as extracted from Tuya:
- LED (channel 1) on P14
- Pair/Toggle All Button on P24
- Wi-Fi LED on P6
- Relay (channel 2) on P8
- LED (channel 2) on P26
- Relay (channel 1) on P7
Device seems to be using CB3S module, which is using BK7231N.
And the Tuya section starts, as usual, at 2023424 (0x1EE000).


    Able to flash OpenBeken, got 2 relays working for each outlet, but can not switch USB A/C.
    Any idea what to check? (Already tried to assign "rel" to all empty pins - no luck).
  • #13 21909311
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
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    Rate: 12630
    Are you really sure that you've checked all pins with GPIO Doctor? The one from the Web App? There isn't much options left... I wouldn't expect TuyaMCU or anything like that inside.

    Can you show some photos from the inside?

    Do you have factory firmware backup?
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  • #14 21909339
    gomelkiev
    Level 6  
    Posts: 15
    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Flashing Geeni Current + Charge with OpenBK on WB2S Module

    Added after 56 [seconds]:

    Backup.
    Attachments:
    • readResult_BK7231N_QIO_geeni1_2026-23-5-21-15-41.bin (2 MB) You must be logged in to download this attachment.
  • #15 21909343
    gomelkiev
    Level 6  
    Posts: 15
    >>21909311
    Flashing Geeni Current + Charge with OpenBK on WB2S Module
    On this page, I selected 'rel' for all pins and put consecutive numbers. None of those GPIOs controlled USB.
    Here is a review from Amazon.
    Flashing Geeni Current + Charge with OpenBK on WB2S Module
    Looks like this particular model does not allow to switch USB ports.
  • #16 21910442
    gomelkiev
    Level 6  
    Posts: 15
    After couple days device stopped working, took apart, soldered 3.3V and GND, CB3S is working, web is up (I set startup to -1 for both relays), but when I solder both PCB together, device is not working. Any ideas? I don't want to spend a lot of time on this model b/c it will not work for what I need (already got Moes and it's working), anyone in US want it? Just pay shipping from 33414, let me know.
  • #17 21910538
    p.kaczmarek2
    Moderator Smart Home  
    Posts: 14612
    Help: 655
    Rate: 12630
    Faulty/bulked capacitor in the power supply?
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Topic summary

✨ The discussion revolves around flashing the Geeni Current + Charge outlets using the OpenBK firmware on the WB2S module. The user initially inquired about the correct pins for flashing, suspecting RX2 and TX2 would be appropriate. Responses indicated that TX1/RX1 are typically used for flashing, but the user successfully received console output on TX2/RX2. After soldering patch wires to the necessary pins, the user reported successful flashing of the firmware, enabling control via Home Assistant (HA) through MQTT, thus eliminating reliance on Tuya's cloud services. Additional insights included the device's configuration, which revealed multiple relays for controlling USB ports and mains outlets. The community provided guidance on flashing techniques and device configurations, emphasizing safety during the process.
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