OPPO F1S A1601 (MT6755) Lollipop Firmware / Stock Rom

OPPO F1S A1601 firmware
Are you one who is looking for good back up firmware  for your oppo F1s, then here its, fresh back up using CM2.

There are two back up firmware just to ensure what was happen next if you try to do something in your phone like formatting or rooting or etc.

Download OPPO F1S A1601 Firmware backup by jarm2O

Pass: oppojarm

Download OPPO F1S A1601 Firmware backup by makpay_29

Pass: gsmsandwich.com.ph

Note: This is firmware only for MT6755 Chipset, it is different from the demo unit of F1s, flashing wrong firmware may cause some problem. this is fresh backup firmware and we are waiting for feedback.

How to flash Android phone using SP Flash tool

What we need?
  • PC
  • Firmware/ROM, SP Flashtool and MTK Drivers
  • USB Cable
  • Smartphone with 30 to 50 percent battery charged

Driver Installation

Flashing phone need to install driver first in order to connect and to be able to flash firmware, we will be install MTK driver in to different way, choose only one by using Auto Installer Drivers or MediaTek USB VCOM drivers. 

Install Driver using Auto Installer Driver

  • After you download and extract, open the folder and you will see Install.bat 
  • Run and it will appear Windows Security window
  • Click Install this driver software anyway 
  • It will appear many times and just click the same button. 
MTK Driver Auto Installation

Wait for CMD window to display Install complete that indicate that driver installation is successful.

Driver auto installer done

Install Driver Using MediaTek USB VCOM drivers

To manually install MediaTek USB VCOM drivers, you can follow this video:

Flashing Stock Rom in SP Flash tool

  1. Download Latest SP Flash tool here and extract to your desired location.
  2. Open the extracted file folder and run flash_tool.exe
  3. On Scatter-loading file, click the choose button to browse for the Android_Scatter.txt
    flash tool choose file

  4. Follow the screenshot below in choosing android scatter file.
    Note: The given screenshot scatter file is for Starmobile UP firmware with MT6582, this may different to your downloaded firmware depend on what model of your phone. this is just a guide on how to flash Mediatek smartphone.
    SP flash tool choose scatter

  5. After you select and load scatter file, either you see unchecked file, if you are not sure what you are doing, I suggest to Do not change anything. In below screenshot, the default CACHE and USRDATA is uncheck, if yours is checked, Just leave it default and do not unchecked.
    SP flash tool file loaded

  6. In your phone turn off first, or remove battery (if removable) because turn off is a must.
    In flash tool Select Download Only Then click Download button
    In your phone Press Volume up or Down or you can press them both Then insert USB Cable. If you see a Red Progress bar then the phone is detected.
    After you see detected proceed now to step 7.
    sp flash tool phone detect
    6.1 Some phone that has a Virus infected encounter this warning;
    PMT changed for the ROM; it must be downloaded. If you don't see this warning just proceed to step 7.
    to solve this, just follow the suggestion, Please Select "Format All + Download" Scene and try again the step 6.

    SP flash tool PMT changed for the ROM

    SP flash tool PMT changed for the ROM format all

    SP flash tool PMT changed for the ROM formatting

  7. You will see a yellow progress bar, that means it start downloading. Just put down your phone because it may take few minutes.
    WARNING: Do not unplug or disconnect during this operation.SP Flash tool Downloading
  8. And finally, it will popup a Download OK,  that means the flashing new firmware is successful.

    SP flash tool download ok

    Now that you flash your new firmware, restart your phone and you can now setup settings and install your desired application. if you encounter some problem, please comment and we will help you.
    NOTE: Starting up for the first time may took long.



After you flash new firmware and try to dial *#06# to check your IMEI you will see INVALID or null Just follow How to Fix/Solve Invalid IMEI in safest method.


  1. file not work n cant flash plz dont update fake file
    brom error status scatter file invalid (oxc 30001)

    1. thank you Aryan for giving us a feedback, have you tried the two both file? which one of them?

  2. Master Vir, I cannot download the o+ aplha 360 at devhost, any other link, TY

    1. Just updated here http://gsmsolutionph.blogspot.com/2016/11/Oplus-360-Alpha-firmware.html

  3. can this fix sim lock i have oppo f1s from australia and im now in philippines?

    1. I didn't tested yet sir. Im not suggesting you to try, you can go to the nearest cellphone tech.

  4. my oppo f1s cant switch on after flash done. pls help. thx

    1. Your phone might not compatible with this firmware

  5. brom error : status_sec_imghdr_type_mismatch