Stock ROM are the ones which come by default in Android phones or tablets. These are customized versions of Android done by mobile companies to make their devices unique in looks and features with official firmware.
Official Oppo A9x PCEM00 Stock Rom Can be used to Update / Downgrade firmware, solved Softbrick / Bootloop, Hardbrick, Fix Unknown IMEI / Baseband, FRP Unlock, HardReset, Unroot, Back to stock original factory rom from custom rom and all repair firmware solution your phone. Oppo…