Xiaomi Redmi 9A - stock ROM bricks the device

hero79

Junior Member
Mar 2, 2020
3
1
Wroclaw
Hello
I've got hard times trying to make Redmi 9A work with custom ROM.

The device has unlocked bootloader with Hydra, it was originally locked with Mi Account, bricked and with no IMEIs.
I can flash ENG ROM and connect both to WiFi and telephony. WiFi does not show NVRAM Err.
On ENG ROM second IMEI number is correct, but the first one is a string of zeros. I assume, that's a normal on this state since Hydra reads both IMEI numbers correctly. I tried wiping both NVRAM and NVDATA, and writing imei with universal flashmode method in Hydra, which appears to give the most promising effects of all methods. META mode does not work at this device at all.

My main problem is that after flashing TWRP and custom ROM, WiFi doesn't work. I know that I should flash stock ROM instead of ENG rom before flashing, but here's the problem:
Whenever I try to flash stock rom through SP_Flashtool, Hydra or TWRP, all I get is bricked device with black screen. It's usually completely dark and unresponsive to button combinations, it just vibrates at the start, but sometimes it flashes boot animation for a fraction of second, and goes black afterwards.
As a sidenote I can add, that Hydra always warns me about the lack of synchronization on any operation (I tried running it with battery but that doesn't change anything). Hydra operations always succeed tho.
Could anyone help? I've spent hours trying to figure out how to bring this device back to life.
 
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