[GUIDE] Unlocking JioFi 3 JMR540 & JMR541 for all networks

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Shraaj

Member
Jun 9, 2021
6
0
I am having issues in STEP 3,After Removing Battery and Resetting and Holding Power Button+WPS Button Device Goes to boot mode as you said (3 LED Lights are Red and when we stop the button,then automatically after 2-3 seconds device is in normal mode. Like Different Colors. Please help me ? @abhimortal6 ,I am not able to Flash or anything because of this, Even i checked my Cable Twice and also ADB Drivers are installed properly,but in My Device Manger (JIOFI-Doesnt Recognized)it is there as ETHERNET DEVICE
 

abhimortal6

Senior Member
  • Mar 6, 2014
    131
    149
    Gwalior
    I am having issues in STEP 3,After Removing Battery and Resetting and Holding Power Button+WPS Button Device Goes to boot mode as you said (3 LED Lights are Red and when we stop the button,then automatically after 2-3 seconds device is in normal mode. Like Different Colors. Please help me ? @abhimortal6 ,I am not able to Flash or anything because of this, Even i checked my Cable Twice and also ADB Drivers are installed properly,but in My Device Manger (JIOFI-Doesnt Recognized)it is there as ETHERNET DEVICE
    Hi, please read the post carefully. I've never said to hold power + WPS button. Use reset button to boot into bootloader mode
     

    Shraaj

    Member
    Jun 9, 2021
    6
    0
    Hi, please read the post carefully. I've never said to hold power + WPS button. Use reset button to boot into bootloader mode
    Yes,I did that also (after reset button) Press the Power Button Until LED Light Blinks all Red Color, connected it to my Laptop and the moment i remove my fingers from power button device going automatically to normal mode.?
     

    abhimortal6

    Senior Member
  • Mar 6, 2014
    131
    149
    Gwalior
    Yes,I did that also (after reset button) Press the Power Button Until LED Light Blinks all Red Color, connected it to my Laptop and the moment i remove my fingers from power button device going automatically to normal mode.?
    You're reading it wrong there's no involvement of power or WPS button. Please read the post again
     

    Shraaj

    Member
    Jun 9, 2021
    6
    0
    You're reading it wrong there's no involvement of power or WPS button. Please read the post again
    Keep pressing button down and insert USB cable
    Release button as soon as all the LEDs in Display turns RED. This means device is in boot loader mode....


    Please Tell me Step 3 in simple terms
     

    Shraaj

    Member
    Jun 9, 2021
    6
    0
    You're reading it wrong there's no involvement of power or WPS button. Please read the post again
    Sorry Brother Rectified it,Now Proceeded all the Things ,still after successful Procedure My Vi and airtel are not working,Also Flashed the File "TWICE" Says sucessful but after rebooting it 3-4 times still Other SIM are not working ? what may be the issue, I have JMR 540 Device.
    2021-06-11.png
     

    Shraaj

    Member
    Jun 9, 2021
    6
    0
    Read point 2 in FAQ section.
    You said IN FAQ-Try flashing recovery partition by that command!

    Bro,Can You Type that Command again ,it says File Location does not exist...I mean to say,What to do after this issue? What to exactly Type in the Command Prompt ? Your Command says does not exist! Please say it clearly,and I am sorry for troubling you! I am not Good at Command and all!

    Command Instructions:-

    1.fastboot devices
    2.fastboot flash system "D:\system.img"
    3.fastboot reboot
    So this new command when to enter and please type exact command.

    Sorry for troubling you
     

    abhimortal6

    Senior Member
  • Mar 6, 2014
    131
    149
    Gwalior
    You said IN FAQ-Try flashing recovery partition by that command!

    Bro,Can You Type that Command again ,it says File Location does not exist...I mean to say,What to do after this issue? What to exactly Type in the Command Prompt ? Your Command says does not exist! Please say it clearly,and I am sorry for troubling you! I am not Good at Command and all!

    Command Instructions:-

    1.fastboot devices
    2.fastboot flash system "D:\system.img"
    3.fastboot reboot
    So this new command when to enter and please type exact command.

    Sorry for troubling you
    Obviously you have to change the file’s location like you did in while flashing system. Listen I’m not trying to be rude here but I’m gonna suggest this please read word by word guide is extremely simple it doesn’t require any prior flashing/modding knowledge it’s matter of following guide.
     

    Shraaj

    Member
    Jun 9, 2021
    6
    0
    Thanks bro,It worked for me

    Note- Tested with Vi Working but Not BSNL (My Area has 2G and 4G Network)
     
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    • 7
      Unlocked Firmware for JioFi 3 JMR540 & JMR541

      Disclaimer
      I am not responsible for any kind of damage to your device.
      Use this firmware at your own risk
      Post is for educational purpose only.


      ONLY FOR JMR 540 & JMR 541


      I was able to dump and reverse engineer JioFi 3's firmware to see if I can unlock the SIM restrictions. JioFi 3 is designed by Foxconn it uses generic firmware. Unlocking took time though. Tested with Vi, Airtel.



      Guide

      Make sure you're on same firmware version
      • JMR 540 - FXN_JMR540_R6.16
      • JMR 541 - FXN_JMR541_R3.10
      If not please use the device for sometime it'll autoupdate.


      1. Locate your device model and download the respective Firmware and extract it to a known location


      2. Install drivers and tools (skip if already installed)

      • Install Fastboot drivers ( google it for mac and linux it's easy to find)
      • Install Fastboot ( google it for mac and linux it's easy to find)

      3. Prepare device

      • Remove battery from JioFi 3
      • Locate reset pin hole button
      • Lay down JioFi 3
      • Use Paper Clip / SIM Ejector Tool to press button inside (using sharp object is not recommended)
      • Keep pressing button down and insert USB cable
      • Release button as soon as all the LEDs in Display turns RED. This means device is in boot loader mode

      4. Flashing Unlocked Firmware

      • Open adb and fastboot tools terminal
      • Enter following to check if device is connected

      • fastboot devices

      • It will return something like this
      • baxxxxx fastboot

      • This means device is connected. If your device doesn't show up here please check drivers in Device manager
      • Now first erase the system partition

      • fastboot erase system

      • It will return something like this
      • erasing 'system'... OKAY [ 1.104s] finished. total time: 1.105s

      • Now flash the firmware
      • fastboot flash system "D:\system.img" ( replace path )

      • It should return something like this
      • sending 'system' (34306 KB)... OKAY [ 1.276s] writing 'system'... OKAY [ 9.462s] finished. total time: 10.741s

      • Now send reboot command to device
      • fastboot reboot

      • You'll notice device will reboot normally now you can unplug the cable.

      Congratulations your device is now unlocked and you can reinsert battery and another SIM for testing.

      Firmware will take long time than usual to boot do not panic.

      4. Changing APN
      • Insert SIM connect with JioFi 3 wait it to intialize
      • Open Web UI from browser (http://jiofi.local.html/)
      • Now login (default username/pwd is administrator/administrator)
      • In Network Tab you'll find setting for changing APN
      • Put it on manual and enter "internet" as APN (without quotes)
      • Hit apply/save device will reboot again automatically and it'll auto connect
      • Just wait patience is the key here it'll connect.

      If something goes WRONG or you want to UNDO you can re flash original firmware which is provided in this post.


      Original backup




      FAQs

      1. Q. My device is not visible in fastboot devices
        A. Confirm driver installation a faulty cable can also be the issue.
        .
      2. Q. Everything went well but still no changes in dashboard
        A. After successful flash if you still don't see the changes your device is probably booting from recovery partition. Try flashing recovery partition by
        fastboot erase recoveryfs
        fastboot flash recoveryfs "D:\system.img"
        .


      3. Q. After resetting device from pin hole button it shows INVALID SIM.
        A. This is supposed to happen just reboot the device it'll work again.
        .
      4. Q. Can I undo all this and get back to original firmware
        A. Yes just flash the original firmware provided in post and reset the device.







      Mentions:
      Thanks to
      Karuppusamy for testing it on JMR541.



      1
      successfully unlocked my jiofi 3 JMR541. tested with voda and its working well and good. Thanks a ton for this bro.
      I was late in checking this thread and got shipped airtel unlocked mifi from home.
      Can you show us dashboard screenshot. This will help other users to verify
      1
      Totally working! thanks a ton a bro <3
      1
      1622625406032.jpeg

      This is completely genius! I am now able to use Airtel sim on my JioFi! Thanks!
      1
      Do you have plan to release unlocked firmware for JioFi-2 also?
      It requires physical access to the device. As soon as I get hands on the device I'll surely try to reverse engineer it!