The OPPO F9 is a big surprise that OPPO has brought to users, offering a completely new look and many upgrades while keeping the price almost unchanged. If you want a unique, fashion-forward product at an affordable price, the OPPO F9 is an impressive choice.
The following guide by Pham Giang is shared here for everyone. This solution has been tested on multiple devices. If you encounter an OPPO F9 stuck on the logo, ROM not flashing, or a System Fail error, and the hard drive is still stuck, please follow the instructions below.
How to
Step 1: Flash the Dump Fix boot and system files first.
Step 2: Flash the highest version ROM with the F19 code, or any ROM versions from F18 – A20 – C18 will work (tested on multiple devices).
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