Develop Bugs

Tablet recovery

Hello guys,my name is Otavio. I have a tablet with android 4.0,i root it recently, but i deleted something,and now the operating system no longer starts, a error appears "SystemPrepare stopped" and does not start the android, I've tried everything,without sucess. He has Cortex processor A9. I need help

MTCD GS bootloop issues after RAM upgrade

Hi, so i went on a little adventure with my MTCD PX3 RK 3188 unit, first i wanted to experiment with some new RAM upgrades, so I tried quite a few different manufacturers and specifications as I work for a PCB/PCA manufacturer. But I think i have a pair that works now, cant remember the exact part name but it is manufactured by Micron 1 GB modules. The unit boots, and i can access recovery and flash roms without problems. The issue arises when it tries to bot the selected ROM, the unit shows the splash screen of the rom selected and then proceeds to boot the ROM with the flashing car logo. But after the car logo has blinked for a minute, the screen shuts off and the device reboots.
So, while fiddling inside the recovery menus I've discovered what i think might be the issue, firstly I cannot wipe the device, if selected the cmd prompts: "Data wipe failed"
But if i try to install a new ROM I can also observe that it does not update uboot.img because "E: Can't find uboot".
This leads me to belive that while I was experimenting with the RAM modules, I might have overheated the internal storage chip, in turn corrupting some data.
So now i need some assistance:
1. Is there any way to flash a new bootloader?
2. Can i change the internal memory chip and just flash the MCU and rom to it? How would i do that? Will it fix the problem?
3. Is there any other fixes that I should try?
Thank you for any suggestions.

Head over to OTG thread to flash ROM directly or scenario where eMMC is corrupt or blank.

HerpyDerpy said:
Hi, so i went on a little adventure with my MTCD PX3 RK 3188 unit, first i wanted to experiment with some new RAM upgrades, so I tried quite a few different manufacturers and specifications as I work for a PCB/PCA manufacturer. But I think i have a pair that works now, cant remember the exact part name but it is manufactured by Micron 1 GB modules. The unit boots, and i can access recovery and flash roms without problems. The issue arises when it tries to bot the selected ROM, the unit shows the splash screen of the rom selected and then proceeds to boot the ROM with the flashing car logo. But after the car logo has blinked for a minute, the screen shuts off and the device reboots.
So, while fiddling inside the recovery menus I've discovered what i think might be the issue, firstly I cannot wipe the device, if selected the cmd prompts: "Data wipe failed"
But if i try to install a new ROM I can also observe that it does not update uboot.img because "E: Can't find uboot".
This leads me to belive that while I was experimenting with the RAM modules, I might have overheated the internal storage chip, in turn corrupting some data.
So now i need some assistance:
1. Is there any way to flash a new bootloader?
2. Can i change the internal memory chip and just flash the MCU and rom to it? How would i do that? Will it fix the problem?
3. Is there any other fixes that I should try?
Thank you for any suggestions.
Click to expand...
Click to collapse
I think you can try to use rockchip tools to erase the flash memory and to flash again your image.
As px3 and px5 are interchangeable....
Check on forums as there is some information of building a OTG cable for px5 to allow you to connect the coreboard to USB on PC and allows you to use rock chip tools
Enviado desde mi SM-G950F mediante Tapatalk

Pls help! Installing software from scratch on MTCE Px3 2GB

Hi guys,
your help please! I have a Px3 2GB head unit with the following:
- MCU MTCE_KGL_V2.70_1
- Androd 7.1.2
I was trying to update to the latest Malaysk version 5 and somehow during installation an error message appeared and the unit is now unusable. When turned on only the initial screen (Navigation system) is visible and nothing else, so I can only switch it either off, or on and it stays on that screen. I have tried to install a new software through USB and microSD but nothing seems to work.
Do you know how I can install the software again so that I can use the unit?
Many thanks for your help!!

hard reset / troubleshoot TCL 50C715

Hi,
my TCL 50C715 is curretly dead. It started to make weird noises, would not turn off anymore and after I unplugged it the home-screen in more or less empty and the few remaining icons (among them the settings-icon) don''t work anymore. Unfortunately the only documented way to do a factory reset is using this menu, so currently I am stuck.
Does anone have an idea what the problem could be or how to accesss the recovery on this model?
Many thanks!

First of all you should post in deducated thread.....
TCL Android TV model 55p8m / Android Recovery TCL/BeyondTV/BeyondTV
My TCL Android TV model 55p8m has stuck and can't press any key in remote. The screen gives options to - Try Again - Factory data reset, but do not know how to select one of this option and continue without a keyboard or remote connected to the...
forum.xda-developers.com
There you look for IMG (recovery) file to flash.
Btw,
you should post also your present firmware.

How can a thread dealing with the p8m models be the proper thread for my c715 model? Are you sure?
And I don''t know the current firmware and cannot look it up as my tv has become unresponsive...

If the clear the system cache is on the boot menu you can try that first along with a hard reboot (simulates pulling the battery).
Otherwise the easiest quick fix is factory reset... if it works... it usually does unless the root cause is hardware.
It maybe a virus or rootkit...
In pre Pie OS versions there are rootkits that can survive a factory reset, a reflash is needed to kill them if the factory reset fails to.

Thomson 55ud6406 boot loop

asking for help accidentally in the programming options, I activated the indicator, the TV turned off and the android logo is still there
I've already won various updare pendrives but after the update is complete, the android logo is still there. Is there any way to get into recovery? to make a short circuit on the motherboard?

MT58 platform......
read here:
Downgrade File for TCL C6 (Current Version: V8-T658T01-LF1V534)
Hey guys, I am new to the Android TV scene so bear with me. Recently bought TCL C6 TV. It updated yesterday to Android Oreo but the Color accuracy especially in HDR has fallen considerably, constant dimming of backlight for no reason and not to...
forum.xda-developers.com

I have read anything that I would not have uploaded, it will not reset the TV settings for me, do you have an idea?

grzechu023 said:
I have read anything that I would not have uploaded, it will not reset the TV settings for me, do you have an idea?
Click to expand...
Click to collapse
You need TV to work back or worry about not to reset TV ?
First try to unplug TV from power socket and after 10-15 min plug back .
If not,you nee to flash PKG file, to boot normal again.

I have already tried and you have nothing on a 100% working pkg file, each I uploaded the TV stops on the android logo after 4 hours the same