STM32 problem black screen and no HDMI Reterminal

Hello,

I have actually a problem with my seeed reterminal.

I tryied to upgrade the STM32 firmware to the 1.8version and now I have no screen nor hdmi at all…

I can connect to the reterminal through ssh so I tried to flash the firmware with both methods.

The first one doesn t work because I have this kind of error and I don t know how to solve it

pi@raspberrypi:~ $ i2ctransfer -y 1 w2@0x45 0x9b 0x01
Error: Sending messages failed: Remote I/O error
pi@raspberrypi:~ $ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- 19 -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- 29 -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- 38 -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- 56 -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

I tryied the second method with wires and the programm successed to flash the STM32 with the 1.8 and 1.7 version but nothing happen then

I tried to reboot it many times, reinstall Raspberry pi OS, reinstall drivers…

Drivers seem to work because I have access to the light sensor, the RTC and buttons with evtest.

I have also tryied to connect to the reterminal trough VNC but it doesn t work neither

I have no more idea, could anyone help me ?

Thank you very much