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Thread: [Tutorial/Walkthrough] Downgrading 1.1.2 to 1.1.1

  1. #61
    Default Unable to erase firmware modem version
    I made all the step behind and it's all ok.
    But when i launch iEraser , it's seems to erase all, but if i lauch bbupdater -v , it doesn't give me the message "baseband unresponsive to pinging" , but the Firmware Modem version!!

    I posted what's up when i launch iEraser and bbupdater -v , please HELP ME!!!!


    Resetting the Baseband...Done
    Opened: /dev/tty.baseband
    iEraser: tool by geohot
    thanks to gray and the dev team for the implementation
    thanks to nightwatch for the awesome toolchain
    and thanks to anonymous, iProof, lazyc0der, and dinopio for the idea for this cool trick
    this tool erases your main fw, starting at 0x20000. you need this for the testpoint to work
    you need a file called secpack matching your current firmware version in this folder
    see http://iphonejtag.blogspot.com for instructions on finding this file
    Waiting for data...
    Got Header: 77 0b cc
    02 00 85 00 02 00 FF FF 85 02 03 00
    SECPACK
    02 00 04 02 06 00 01 00 00 00 00 00 0B 02 03 00
    02 00 02 08 06 00 00 00 00 00 00 00 08 08 03 00

    Erase
    02 00 05 08 02 00 00 00 07 08 03 00
    02 00 06 08 06 00 01 00 00 00 A0 00 AD 08 03 00
    Hopefully the main flash was erased, wait for the next step...
    # bbupdater -v
    Resetting target...
    pinging the baseband...
    issuing +xgendata...
    firmware: DEV_ICE_MODEM_04.02.13_G
    eep version: EEP_VERSION:208
    eep revision: EEP_REVISION:1
    bootloader: BOOTLOADER_VERSION:4.6_M3S2
    Done

  2. #62
    i took me a while to figure everything out but i finaly got it, your the best thank you : )

  3. #63
    I read all the thread, so I have a question,
    Having a new 1.1.2 out of the box,
    Doing all the steps, downgradingto 1.0.2, then upgrading to 1.1.1, will anySIM.app work?
    as it looks, it does, so correct me...
    If so, should start a new thread, Succesfully downgrade 1.1.2 to 1.1.1 and unlock!
    please correct me.

  4. The Following User Says Thank You to gusss For This Useful Post:

    Applestore (2007-12-01)

  5. #64
    How to downgrade Bootloader 4.6_M3S2 --> 3.9_M3S2

  6. The Following User Says Thank You to longgiang81 For This Useful Post:

    Applestore (2007-12-01)

  7. #65
    hi when i try to use bricker to downgrade to 1.0.2 it stars working but it stops for a very long time ... the status bar says waitinf for iphone and nothing happen...
    iphone 8 gb out of a box 1.1.2 with modem firmware 04.02.13G

    if some one may helpme ill apreciate that because im in venezuela and thats why i need to unlock this phone to have it work qith my home carrier thanks

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