system
10
No, factory reset means to open Apps > Settings > Backup and reset > Factory data reset, it can do every fool very fast on street.
But flashing the rom with the manufacturers software means:
- You must know how to flash Android phones
- You must download new ROM image and know which ROM image you need (It isnt easy if you dont know anything about the phone, only you can see it)
- You must have computer with flashing software and special driver for flashing.
It isnt same.