Best for sharing a fix with a community (e.g., XDA, GSM Forum, or Facebook groups).
It’s separate from the (OS files) and cache . oppo a37m userdata
: To ensure you are using the correct firmware for your specific hardware revision before flashing, you can use the code *#888# to check the PCB serial number . 4. Data Preservation (Backup) Best for sharing a fix with a community (e
Do you need to , or are you looking to factory reset it? If you do not have a backup, you
Settings → Additional Settings → Backup & Reset → Factory Data Reset ✅ Deletes userdata but keeps system intact.
If you do not have a backup, you will need to connect your phone to a PC and use specialized Android data recovery software (such as Dr.Fone, Tenorshare UltData, or EaseUS MobiSaver).
Select the most recent backup file to restore your contacts, SMS, and app settings. Method 2: Third-Party Android Data Recovery Software