OPPO FLS A1601 Stock Firmware ROM ( Flash File )
MT6755__OPPO__A1601__A1601__5.1__A1601EX_11_A.14_160906.rar ( 1.3 GB )
MT6755__OPPO__A1601__A1601__5.1__A1601EX_11_A.07_160715.rar ( 1.3 GB )
Sp Flash Tool (Windows) – Download
Sp Flash Tool (Linux) - Download
Device Drivers – Download, Download 2
Power on your PC as this process will require a PC, USB cable, and Lenovo Phone.
Download Drivers (both 1 and 2), Flashtool and OPPO FLS A1601 stock ROM from the link given above.
Extract Drivers zip file in a folder
Install Drivers and after installation reboot your PC once.
Now you have to extract Flashtool and Run Flash_tool.exe
Extract Stock ROM rar file in a folder.
Click on Download tab in flash tool and click on Scatter-Loading
Now browse to the ROM folder and select MT6755_Android_scatter.txt and click Open
Now you have to Click on Download button.
Power off your OPPO FLS and take out its battery for a couple of seconds.
Put the phone’s battery back in and connect your Mobile with PC using USB Cable.
If everything goes well, you’ll see the progress bar and upon completion, you’ll see Green Circle.
Now you can Safely Remove your Phone from PC and power it on.
Congratulation, You have successfully Installed.
important note :- backup your important data first before do any thing.Match Your Build Number Before Writing Flash and if your imei is damaged after flashing click here or here or here to repair it
Note: This is firmware only for MT6755 Chipset, it is different from the demo unit of F1s, flashing wrong firmware may cause some problem.