If successful, the progress bar will move to 100%, and your OPPO phone will reboot with a clean system.
IMEI corruption is frequent on OPPOs after rogue firmware updates. Brom Mode lets you backup/restore the NVRAM partition safely. oppo brom mode work
For Brom Mode to respond, the PC tool must send a specific "sync" command (0xA0, 0xFE) within the timeout window. If missed, the phone reboots normally or goes into Preloader. If successful, the progress bar will move to