You need a combination of an authorized OPPO service account, a leaked engineering preloader, and a modified Fastboot binary. For 99.9% of users, Recovery Mode and EDL Mode are your only viable low-level options.
If you need Fastboot for custom ROMs, sell the OPPO A7x and buy a phone from a developer-friendly brand (Google Pixel, OnePlus, or Xiaomi with an unlock policy). How to Open Fastboot Mode on OPPO A7x
By continuing to use the site, you agree to the use of cookies. more information
The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.