Redmi 9T problems with turning on

[axelmateuss]

Hi. My phone quite suddenly stopped working - everything was normal (12.5.6 xiaomi.eu, unlocked bootloader etc.) and after one night it just turned off and didn't want to turn on, even in fastboot or recovery. I thought it's battery related, but it wasn't responding to the charger. I left if under the charger for few hours. Nothing changed.
After two days it suddenly just started to react - it was responding, showed low battery, so I charged it and it started normal. Then, after another two days of normal usage I wanted to go to the recovery and... it didn't turn on. Battery was about 90% when I wanted to restart it, so that's not it. When I plug it into the PC it shows in device manager Qualcomm HS-USB QDLoader 9008, so it's in EDL mode. Does anyone know why and how to fix it?

 

[Rares6567]

Just download mi flash tool and your firmware rom and flash the phone. Edit : now i see it is a very old post

 

[axelmateuss]

It's old, but thanks anyway
I've manage to make it work again without formatting - it started in fastboot mode after some time, and from that I was able to boot to the TWRP, then to the system itself. It happens still from time to time, but now I know how to deal with it.

 

[Rares6567]

Ok have a nice day