T95Z Plus flash ROM without reset button help

[Baxarn]

Trying to flash custom ROM to my Sunvell T95Z Plus but it doesn't have any reset button so I can't enter recovery mode. Tried with this method https://www.youtube.com/watch?v=POJRPMymBHo but I got Erase bootloader/Lowper/Identify/Error result. I guess it's a KLMBG4GEAC-B031.

[bumerc]

You tried to flash wrong ROM. When selecting always pay attention to the type of RAM. You need a ROM for LP memory (LPDDR3)

[Baxarn]

Tried with LP RAM and it's still the same..

[bumerc]

Unfortunately little information. What RAM capacity does your device have, 2GB or 3GB? Which ROM did you use? Do you have the chance to establish a TTL connection to the box?

[Baxarn]

It's a 3/32. How to etablish TTL connection? I have root and TWRP.

[bumerc]

here
If you do not have Linux, use putty instead of kermit

[Baxarn]

Thanks for your help, seems I have to order a USB to RS232. How to connect it then? I don't have any GPIO connections.

[bumerc]

There are 4-hole pads on the board,
between SD-Cardreader and USB-Port. Soldering is not essential. A contact (mechanical) is sufficient.

The 4-hole connection order is almost always the same on each PCB, starting from GND (the only square-hole)

PIN-OUT:

1. GND
2. TX
3. RX
4. 3.3V, VCC (is not needed)

Connect the pads to the PCB with appropriate Serial-to-USB-Converter ports and connect the USB-Port of the Serial-Converter to the USB-Port of the PC with a USB-Cable.

GND (PCB) —<-----> GND (Serial-Converter)
TX (PCB) <-----> RX (Serial-Converter) <-----> USB-Port (Serial-Converter) <-----> USB-Port (PC)
RX (PCB) <-----> TX (Serial-Converter)

[Baxarn]

You mean next to the usb port, right? How to flash the .img after that is connected?

[bumerc]

1. Yes.
2. First you need a boot log. In the case of bootloop, you need to short the emmc pins and use a bootable SD card. Or, make sure that the emmc bootloader is intact, then the installation can be done through it.

[Baxarn]

How to know which emmc pins to short?

[bumerc]

look here

[Baxarn]

Thank you so much! Tried atvXperience's LP DDR but almost all apps crash and display doesn't work.. Do you know which works?

[keremim1]

my device is the same as yours. stock rom not found. In other rom, the led panel is not working. Did you find the stock rom?

[adrian.aam]

look here

Hi! I'm in the same trouble. I think this post can help me, but it isn't available any more. Could you post ir again? (Sorry for my English). Thanks a Lot!