Tested and work on any Redmi 9c Angelica version. You use this tutorial to unbrick your devices, or downgrade/ rollback to do bypass UBL
Disclamer
Not recomended for newbie, failed can make your device hardbrick!
Use at your own risk! I am not responsible for your actions.
Make sure read all the instruction & watch the video carefully.
Prerequisite
- Use at your own risk! I am not responsible for your actions
- check preloader (IMEI SAFE!)
- uncheck cust
- flash vbmeta if needed
Video Tutorial
Next
When You Need Unbrick
You can use this tutorial to solve problem such as :
- Failed to bypass UBL using latest firmware
- soft brick (bootloop /stuck logo/ hang)
- hard brick (Mati total / matot)
- flash using wrong firmware
- upgrade/downgrade
- wifi not working
- And other software problem
File Needed
- Xiaomi Redmi 9C Stock Firmware (support bypass UBL) >> Global_V12.0.12.0.QCRMIXM
- MTK GSM Sulteng V1.3.8
- SP_Flash_Tool_v5.1924
- MTK_usb_driver
- UsbDk_1.0.22_x64.msi
Step To Unbrick/ RollBack
- Install all the driver and extract the firmware
- open SP Flash Tool and load the Download-Agent
- Load the scatter from the firmware
- Make sure uncheck the preloader!
- open MTK GSM Sulteng > select brand > phone model > select DISABLE AUTH SLA
- wait until show message Waiting For Device Connection
- Press vol up and plugin USB cable
- Hit Download button in SP Flash Tools
- Wait until finish
- Turn On Phon