Hello. My granddaughter got the tablet Jay-Tech Table Computer 799 N / S SZ1207ZCX008. It operated until yesterday (it will not start). There is a logo, then the Android inscription and that's all. I tried to give him a hard reset but it doesn't help. I have read on the network that it...

I'm trying to upload it but I think I'm doing something wrong> Can someone write me what to do in turn

Instructions: From what I know, you need to extract the downloaded files and then add them to the memory card.

I'll step under the topic. I have the same problem. Most likely the firmware link above is not for this model. Maybe someone else? On the manufacturer's website I can no longer find this model.

Why do you say not to this model?

I read it on another forum. It is true that after booting from the card, the system file is uploaded, a system partition is created, etc. A message about the success of uploading appears. A message about removing the SD card and resetting the device appears. I take out my card, resets the tablet and it's still the same. ANDROID ...

Have you tried making a hardreset after uploading the firmware?

Sory, but I think lukavip is right. Because I did as it was written and it actually does nothing. And how is this hardreset made? It still doesn't work and I don't know why. Maybe it's time to throw this device away?

I tried hard reset and nothing. Displays that the dev / block / mmcblk2p6 file is missing

Well, it remains to disassemble the tablet and look for firmware after marking the disc. It is also possible that the memory has been damaged.

If I have the M799CD-64x16-4layer-Main-V2.0 disc, where should I look for a software? Memory - you mean an SD card which is inserted into the motherboard slot? If you put it in your computer, you can see its contents.

Jay-Tech Tablet Computer 799 - Android Stuck on Logo, Need Firmware & SD Card Update Solution

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#1 17327364 13 Jul 2018 18:28

grunio grunio

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17327364 13 Jul 2018 18:28

Hello. My granddaughter got the tablet Jay-Tech Table Computer 799 N / S SZ1207ZCX008. It operated until yesterday (it will not start). There is a logo, then the Android inscription and that's all. I tried to give him a hard reset but it doesn't help. I have read on the network that it is best to upload new software from SD cards but I can't find this Android software anywhere. Can anyone help me and send me a working download link.
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#2 17327401 13 Jul 2018 18:53

nutergsm nutergsm

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17327401 13 Jul 2018 18:53

Here you have the firmware: www.jay-tech.de/jaytech/public_html/upload/images/support/full/Firmware_Tablet_799.zip
#3 17327463 13 Jul 2018 19:30

grunio grunio

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17327463 13 Jul 2018 19:30

I'm trying to upload it but I think I'm doing something wrong> Can someone write me what to do in turn
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#4 17327502 13 Jul 2018 19:49

nutergsm nutergsm

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17327502 13 Jul 2018 19:49

Instructions: http://www.jay-tech.de/jaytech/public_html/up...Firmwareinstallation__Tablet_Computer_799.pdf
From what I know, you need to extract the downloaded files and then add them to the memory card.
#5 17449593 19 Sep 2018 20:26

lukavip lukavip

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17449593 19 Sep 2018 20:26

I'll step under the topic. I have the same problem. Most likely the firmware link above is not for this model. Maybe someone else? On the manufacturer's website I can no longer find this model.
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#6 17449605 19 Sep 2018 20:30

nutergsm nutergsm

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17449605 19 Sep 2018 20:30

Why do you say not to this model?
#7 17449629 19 Sep 2018 20:43

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17449629 19 Sep 2018 20:43

I read it on another forum.
It is true that after booting from the card, the system file is uploaded, a system partition is created, etc. A message about the success of uploading appears.
A message about removing the SD card and resetting the device appears. I take out my card, resets the tablet and it's still the same. ANDROID ...
#8 17449682 19 Sep 2018 21:08

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17449682 19 Sep 2018 21:08

Have you tried making a hardreset after uploading the firmware?
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#9 17449824 19 Sep 2018 22:18

grunio grunio

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17449824 19 Sep 2018 22:18

Sory, but I think lukavip is right. Because I did as it was written and it actually does nothing. And how is this hardreset made? It still doesn't work and I don't know why. Maybe it's time to throw this device away?
#10 17449834 19 Sep 2018 22:22

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17449834 19 Sep 2018 22:22

I tried hard reset and nothing. Displays that the dev / block / mmcblk2p6 file is missing
#11 17450958 20 Sep 2018 17:19

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17450958 20 Sep 2018 17:19

Well, it remains to disassemble the tablet and look for firmware after marking the disc.
It is also possible that the memory has been damaged.
#12 17500226 16 Oct 2018 19:01

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17500226 16 Oct 2018 19:01

If I have the M799CD-64x16-4layer-Main-V2.0 disc, where should I look for a software? Memory - you mean an SD card which is inserted into the motherboard slot? If you put it in your computer, you can see its contents.
#13 17500308 16 Oct 2018 19:33

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17500308 16 Oct 2018 19:33

lukavip wrote:
Memory - you mean SD card

Not about the internal memory of the tablet.

lukavip wrote:
If I have the M799CD-64x16-4layer-Main-V2.0 disc, where should I look for a software?

In Google.
#14 17500580 16 Oct 2018 21:16

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17500580 16 Oct 2018 21:16

there is nothing online about this record. Grunio is right - time for the basket. Thanks for your time.
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Topic summary

✨ The discussion revolves around a Jay-Tech Tablet Computer 799 N / S SZ1207ZCX008 that is stuck on the boot logo and fails to start. The user attempted a hard reset without success and sought firmware updates via SD card. A helpful response provided a firmware download link, while others discussed the need for proper installation instructions and the possibility that the firmware may not be compatible with the specific model. Users shared experiences of unsuccessful firmware uploads and suggested that the internal memory might be damaged. Some participants expressed frustration over the lack of available resources for this model, leading to considerations of discarding the device.
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FAQ

TL;DR: 1 installation PDF exists; “extract the downloaded files and then add them to the memory card.” Use the SD-card firmware to recover Jay‑Tech 799 bootloops. This FAQ guides owners through SD flashing, hard resets, and hardware checks. [Elektroda, nutergsm, post #17327502]

Why it matters: It helps Jay‑Tech 799 owners stuck on the ANDROID logo either recover the tablet or confirm a hardware fault.

Quick Facts

Symptom: tablet shows the logo, then “ANDROID,” and stops; hard reset didn’t help for the OP. [Elektroda, grunio, post #17327364]
Firmware package shared: Firmware_Tablet_799.zip via Jay‑Tech support (legacy link). [Elektroda, nutergsm, post #17327401]
Install method noted: extract the downloaded files and copy them to a memory card (see vendor PDF). [Elektroda, nutergsm, post #17327502]
Edge case: hard reset reported “dev/block/mmcblk2p6” missing for one user. [Elektroda, lukavip, post #17449834]
Hardware reference: board label observed “M799CD-64x16-4layer-Main-V2.0.” [Elektroda, lukavip, post #17500226]

How do I fix a Jay‑Tech 799 stuck on the Android logo?

Reinstall Android from an SD card using the vendor package. Follow the shared installation PDF and copy the extracted files to a memory card. This approach addresses the boot issue reported in the thread. [Elektroda, nutergsm, post #17327502]

Where can I download the firmware for Jay‑Tech Tablet Computer 799?

A link shared by a helper points to Jay‑Tech support: www.jay-tech.de/jaytech/public_html/upload/images/support/full/Firmware_Tablet_799.zip. One legacy link was shared in 2018. Use it if still reachable. [Elektroda, nutergsm, post #17327401]

How do I prepare the microSD card for the update?

Download the firmware zip referenced in the thread. Extract the downloaded files. Copy the extracted files to a memory card as the instructions note. [Elektroda, nutergsm, post #17327502]

What should I expect during the SD‑card install on this tablet?

Users report the tablet boots from the card and uploads system files. It creates the system partition and shows a success message. Then it asks to remove the SD card and reset. One user still saw ANDROID after completing these steps. [Elektroda, lukavip, post #17449629]

Should I perform a hard reset after flashing the firmware?

Yes. The helper specifically asked whether a hard reset was attempted after uploading the firmware. Perform it only after the flash completes and the device reboots. [Elektroda, nutergsm, post #17449682]

Hard reset shows “dev/block/mmcblk2p6 missing.” What does that mean?

A user saw this message during a hard reset attempt. It indicates the reset process could not locate that partition node. When this appears, the reset did not complete successfully. [Elektroda, lukavip, post #17449834]

Could the internal memory be damaged on the Jay‑Tech 799?

Yes. As one expert noted, “It is also possible that the memory has been damaged.” If flashing and resets fail, suspect storage hardware. [Elektroda, nutergsm, post #17450958]

How can I identify my board to search for matching firmware?

Open the tablet and read the printed board marking. The helper advised disassembling and then looking for firmware based on that identifier. Photograph the board code for accuracy. [Elektroda, nutergsm, post #17450958]

My board reads M799CD‑64x16‑4layer‑Main‑V2.0. Where should I look for software?

Search Google for that exact string and model terms. The helper’s guidance was to look it up directly by the board code. Use quotes for better matches. [Elektroda, nutergsm, post #17500308]

Is the shared firmware link correct for all Jay‑Tech 799 variants?

Not necessarily. One user suspected the linked firmware was not for their unit after it failed to resolve the bootloop. Treat it as model‑specific and verify. [Elektroda, lukavip, post #17449593]

Is the Jay‑Tech 799 still listed on the manufacturer’s support site?

A user could not find the model on the manufacturer’s website. That suggests official downloads may be archived or removed. Mirror any files you find. [Elektroda, lukavip, post #17449593]

After a “success” message and reset, it still shows ANDROID. Why?

One user completed the SD‑card process and saw the success prompt. After removing the card and resetting, the tablet still looped. That indicates the flash sequence didn’t restore normal boot on that unit. [Elektroda, lukavip, post #17449629]

By “memory,” do they mean an internal SD card or the tablet’s internal storage?

The helper clarified they meant the tablet’s internal memory, not a removable SD card. Focus diagnosis on onboard storage, not external media. [Elektroda, nutergsm, post #17500308]

If nothing works, is repair worth it for this model?

The OP contemplated scrapping the device after failed attempts. If firmware access and storage checks go nowhere, some owners retire it. Consider your time and parts availability. [Elektroda, grunio, post #17449824]

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