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Tutorial Unbrick a Hard bricked G4 with a broken recovery button.

Discussion in 'Tutorials' started by Gh0st, Feb 16, 2013.

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  1. Gh0st

    Australia's finest since 1981 Admin

    • Gh0st
    • Feb 5, 2013
    • 197
    • 219
    All credit for this tutorial goes to our valued member FreeRadical, if it wasn't for him unfortunately firstly, breaking his recovery switch (like myself) and then bricking his G4. This tutorial wouldn't exist!
    This is basically the ultimate get out of jail free card, barring physical damage, your G4 can always be recovered now :)

    Tools Needed:
    1 Flathead Screwdriver
    1 Philips Head Screwdriver
    1 Paperclip or short piece of wire

    Software needed:
    RKBatchTool - http://www.mediafire.com/?ahje565a2j7yr6v
    Firmware of your choice - 720p http://www.putlocker.com/file/27C06C9FCA5A810F
    1080p http://www.putlocker.com/file/D19EBAFFB52012FE

    1) Follow my guide to disassembling the G4 here http://techbliss.org/threads/disassembling-the-g4.54/
    You need to fully disassemble the G4 from its shell.

    2) Turn the board over so you are looking at the underside of the G4s internals

    3) Hold your paperclip or piece of wire over the two pins marked with a red halo in the picture below. (Alternatively, you can likely also short the eighth and ninth pin of the NAND.)

    4) Once you have that done, plug your G4 into a USB slot on your PC whilst holding the paperclip/wire over the pins. This shorts the G4 into Mask ROM Mode without having to hold down the recovery button.

    5) Open RKBatchTool.exe, your device should show up as a blue box if you shorted the pins correctly.
    If not, go back to step 3 and try again until you get it.
    (proper screenshot later, I just highlighted a box blue for you to get the idea)

    6) Once in RKBatchTool, find your ROM you want to flash by clicking the far right browse button next to the FW Path text field

    7) Click Restore and wait for your device flash and be alive once again!

    8) Congratulations! You just saved yourself from having a paperweight or having to wait a month or two whilst it gets sent back to China!
    Last edited by a moderator: Jun 22, 2014
    FreeRadical likes this.
  2. Gh0st

    Australia's finest since 1981 Admin

    • Gh0st
    • Feb 5, 2013
    • 197
    • 219
    Correction made to the final picture, thanks to Finless Bob for looking and pointing that out to me :)
  3. FreeRadical

    The Kernel Colonel

    Nice tutorial indeed :p
    Don't worry even if you don't have a flathead or philips screwhead at your disposal. You can improvise with the tools you have.
    I literally pulled my Neo G4 apart using my fingers and used a surgical scalpel to unscrew the circuit board ;)
  4. arun

    New Member

    • arun
    • Dec 25, 2013
    • 1
    • 0
    I did the same but while flashing it displays "prepare idb fail". Any suggestions? I really want to make my neo g4 to live again.
  5. Gh0st

    Australia's finest since 1981 Admin

    • Gh0st
    • Feb 5, 2013
    • 197
    • 219
    Hmmm is there an option to erase the NAND first?
    Havent flashed for a while so cant remember. Try that and if it doesnt work I think you may be out of luck.