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

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Ambivert12

New member
May 19, 2020
1
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hello my device is not detected. I tried all in FAQ 1 none is working. adb detects other devices in which debugging mode is on but jiofi is not detected. Are there any pre requisite steps before it? my adb drivers are fine and cable is also good . please help
 

habib.my

Member
Apr 4, 2018
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Xiaomi Redmi 5A
Redmi Note 8
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  • 1
    Hello Friend! Great job - you're done! The firmware works in Russia. There was a small problem in one of the telecom operators. The fact is that I cannot enter the dot signs in the field where the name is the name of the APN. What to do in this case?

    View attachment 5353085View attachment 5353087
    Hi, I’ll suggest you to use “internet” as apn. For us in India it is auto configured after that.
    1
    @abhimortal6 thanks for making jiofi useful : ]

    also, if anyone facing problems doing the procedure then checkout this video
    how to unlock jiofi link : https://youtu.be/fPPZdFILphc
    i hope u will find it useful
    1
    @abhimortal6 thanks for making jiofi useful : ]

    also, if anyone facing problems doing the procedure then checkout this video
    how to unlock jiofi link : https://youtu.be/fPPZdFILphc
    i hope u will find it useful
    Good, also credited in the video thanks.
    1
    abhimortal6 Bro, I am using this device for almost from it's released date and I knew someone someday would be able to unlock this. I used to checked this online occasionally. Finally you made this possible. Thanking wouldn't be enough. Great job!
    1
    How did you manage to change it's APN to airtelgprs.com ? Cause you can't put dot (.) in apn section
    Not required all Indian APNs are auto configured after putting "internet" as APN follow original post.
  • 13
    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.


    What about JioFi 2, 4, 5, 6?
    Reverse Engineering takes lot of time and coffee. Until I get physical access to device I won't be able to unlock it. I'm constantly searching them on OLX as soon as I get hands on I'll surely try to RE and unlock it. I'll update the same here if there is no update here at the time of your reading then I haven't got the device yet so please don't spam for update hope you understand that I don't get anything by doing these things, I do it for liberation of locked hardware to meet it's real destiny and of course for the people. I also have a day job so no I cannot guide or teach you, hope you understand why.



    2
    bro is unlocking more 4g bands or manual selection of bands can be done ?
    Totally possible even 3G but it can't be done through WebUI it'll requires shell access.
    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.
    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