If you see a menu with "Recovery Mode," "Normal Boot," and "Fastboot Mode," you have successfully entered the bootloader menu. Use the Volume buttons to navigate and Power to select "Fastboot Mode."
If your OPPO F1s absolutely refuses to open Fastboot Mode using any of the above methods, the hardware buttons or bootloader partition might be corrupted. In this case, you must use (for MediaTek chipsets) to write a new bootloader.
OPPO F1s runs ColorOS (based on Android 5.1/6.0), which includes a hidden Engineering Menu that can force a bootloader reboot. How to Open Fastboot Mode on OPPO F1s A1601
| Issue | Probable Cause | Solution | |-------|----------------|----------| | adb reboot bootloader reboots normally | Stock bootloader ignores Fastboot flag | Use key combination (Step 4) or flash custom bootloader | | Fastboot devices shows nothing | Missing drivers or locked bootloader | Install MediaTek VCOM drivers; unlock bootloader first | | Fastboot commands fail with remote: unknown command | OPPO's bootloader accepts only limited Fastboot commands (e.g., fastboot oem unlock ) | Use fastboot flashing unlock or MTK client tools |
First, download the TWRP image for A1601 (version specific for MT6755). Then type: fastboot flash recovery twrp_filename.img fastboot reboot If you see a menu with "Recovery Mode,"
💡 If your device shows "Fastboot" for a split second and then reboots normally, it usually means the bootloader is locked or the drivers on your PC aren't configured correctly. If you'd like to move forward with your project, tell me: Are you trying to flash a specific file ? Is your phone currently stuck on a logo?
Without Fastboot, you cannot install a custom ROM or root your device using Magisk. For the OPPO F1s A1601, this mode is the gateway to full system control. OPPO F1s runs ColorOS (based on Android 5
Sometimes, the OPPO ColorOS recovery menu offers an option to boot directly into the bootloader/fastboot. Power off your device.
Note: These codes are region-dependent. If one doesn't work, try the others.