Reinstall the MTK USB drivers and restart your computer.
Most flashing tools (like SP Flash Tool or Oplus Download Tool) are designed for Windows. You will need a computer or laptop running Windows. Additionally, using the original USB cable that came with your Oppo F1s or a high-quality, data-sync-capable cable is required to avoid interruption errors during data transmission.
If you’ve forgotten your pattern or PIN, flashing the stock ROM can bypass these locks (note: this will wipe all data). Firmware Details for Oppo F1s A1601 Specification Model Number Device Name Chipset MediaTek MT6755 Android Version 5.1 (Lollipop) upgradable to 6.0 (Marshmallow) OS Interface How to Flash Oppo F1s Firmware (Step-by-Step) oppo f1s firmware download 712 work
Once you have downloaded the firmware (712 or latest version) and the SP Flash Tool, follow these steps:
All Oppo F1s models are generally identified as A1601. However, different regional variants exist. It is recommended to check your phone’s exact model and region to match it with the correct firmware. The Oppo F1s model number and current software version can be found in “Settings” > “About Phone”. Reinstall the MTK USB drivers and restart your computer
This is the simplest method and does not require a computer. It is recommended for phones that can still boot into recovery mode.
Boot back into TWRP recovery mode. Run a factory reset cycle under the regular Wipe menu and clear out old configuration fragments. Additionally, using the original USB cable that came
Right-click the downloaded .zip file and extract it to a folder on your desktop.
If you are specifically looking for a version of Android 7.1.2 that "works" on this device, you must look into rather than official stock firmware. Stock Firmware (Official) :
Oppo F1s (A1601) does not have an official Android 7.1.2 Nougat firmware update; its official support ended with Android 6.0 (Marshmallow)