Install OST LA (do not run it yet). If you downloaded a portable version, extract it to C:\OST LA .
Yes, if the flash file is Android 10. However, check the build number. Flashing a higher version is fine; downgrading is risky due to anti-rollback.
Always take a backup of your current NVRAM (IMEI) before flashing. While RepairMyMobile’s file won’t wipe IMEI on “Download only” mode, a “Format all + download” will erase it.
