Oppou70 1 When updating the firmware, you are prompted that the usbser.sys file is missing. What should I do?

Hello, this situation should be caused by a damaged firmware package. I suggest you go to OPPO official website to download the complete firmware package and save it in your mobile phone to refresh the machine.

Brush tutorial: back up important data first! Then the mobile phone is connected to the computer and the downloaded firmware is stored in the mobile phone. Then press the power button for another ten seconds to enter the power-off state (if it is necessary to turn off the detachable battery, remove the electric plate and reinstall it). Press and hold the power button and the volume reduction button at the same time to enter the recovery mode. Select the power button through the volume button to confirm, double clear (restore the factory settings and clean the cache to erase data/factory reset and erase the cache partition), then select the firmware package, and restart after the installation is successful. If there is a new version, you can also directly connect to WIFI or other networks on your mobile phone, and then enter "System Upgrade" to upgrade OTA.

Backup tutorial: telephone, SMS, photos, notes, etc. Backups can be made through nearme cloud service. Software can be backed up through the software store.

OPPO smartphone firmware download address: /index.php? Q = software/list & type =1& Cate= 102 I suggest you upgrade the official firmware, which is relatively more stable.