Thursday, May 31, 2012

Temporary Stock E4GT from emmc

Utility for CM9 Epic Touch
This is a temporary ROM that boots Samsung's Gingerbread EL29 firmware entirely from emmc without making any changes to the ROM currently installed on your phone.  When you reboot, you return to recovery where you can re-flash the ROM to return to CM9.  This temporary ROM is useful for several purposes.
  • Settings > About Phone > System updates >
    • Update Profile.
    • Update PRL.
  • Sprint Activation.
  • Dial codes and diagnostic mode.
  • GPS Fix
    • Install the GPS Status app, go outside with clear view of the sky, enable GPS and run the app.
    • After you have a GPS fix, GPS should work in CM9 too.
Changelog
  • v1: May 31st, 2012
    • Initial release based on Gingerbread EL29.
    Download
    • e4gt-el29-emmc-utility-v1.tar.xz [1] [2]
      • 258MB md5sum bb6a67ee2695ca8270afed5538d60068
    How To Use
    1. Download the tar.xz file.
    2. Unpack using 7-Zip (Windows) or Keka (MacOS X) or any other xz capable archive software.  Recent versions of Linux can unpack it with tar xfvJ filename.tar.xz.
      1. Do you have a folder named multiboot?  If not, try again.
    3. Plug your Epic Touch into your computer and mount as USB storage.
    4. Copy the entire multiboot folder into the base of your emmc (internal storage, not sdcard).  Safely remove the USB storage device from your computer to ensure it wrote everything properly.
    5. STOP! Did you copy the multiboot folder to your internal storage?
    6. STOP! Do you have your current ROM .zip on your sdcard ready to flash again?  You will need it later.
    7. Use Mobile Odin to flash directboot CWM v3.  Carefully read the warnings on that page.
    8. Install zip from sdcard > choose zip from internal sdcard > multiboot > EL29 > boot_EL29.zip
      1. Did you see "install from sdcard complete"?  You failed to follow directions.  Only the above CWM will work.
    9. WAIT.  It will eventually boot stock Gingerbread.
    10. Reboot your phone and it will automatically go back into CWM recovery.  Reflash your ROM.zip and reboot to return to your ICS ROM.
    Warnings!
    • DO NOT MOUNT USB STORAGE ON YOUR COMPUTER WHILE RUNNING TEMPORARY GB. BAD THINGS WILL HAPPEN.
    • DO NOT USE AS DAILY DRIVER...
    Credits
    • mkasick - kexec port for E4GT.
    • noobnl - ROM hacking to make this work (with help from wtogami).
    • slick_rick - QA testing. 
    [XDA Discussion] [Google+ Discussion]

    If you appreciate our work, please consider supporting Team Epic with a tiny contribution.

    17 comments:

    1. I never had GPS issues on CM9, but I went ahead and got a lock on EL29 just in case and it worked.

      ReplyDelete
    2. I did everything exactly as specified. however, after indicates success in flashing boot_EL29.zip instead of auto rebooting as it did in QBKing's video, it just sits there. I waited for over 20 minutes. It never rebooted into the stock. So when I manually did reboot system, it reboots back into CWM. Many are saying that this works flawlessly. But there are still some - like myself - who are following directions exactly as given. I watched this vid and read written instructions. Still not working

      ReplyDelete
      Replies
      1. i myself had the same problem. the only thing that varies with the instructions and what qbking said are steps 4 and 5
        qb said place the multiboot folder in either internal or sd card
        4 and 5 say
        Copy the entire multiboot folder into the base of your emmc (internal storage, not sdcard). Safely remove the USB storage device from your computer to ensure it wrote everything properly.
        STOP! Did you copy the multiboot folder to your internal storage?

        about to give that a try, think that might be your flaw

        Delete
      2. nope just tried and it didnt matter weather the file was on the interal or sd.... no booting into el29

        Delete
      3. I to am having the same problem. It just stays at the Samsung Galaxy GT-I9100 screen with the triangle !. If I reboot manually it goes to the loader again.

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      4. Make sure you put the multiboot folder directly in the internal storage main folder instead of placing it inside of some other folder. I just tried this and it works fine now.

        Delete
    3. I had to unpack twice (WinXP machine using 7zip). I downloaded the e4gt-el29-emmc-utility-v1.tar.xz and validated the MD5 sum. In 7zip, it unpacked to e4gt-el29-emmc-utility-v1.tar. Then I had to unpack that to get the Multiboot folder and everything else.

      Hope this helps others

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    4. Thank you for this! I just used it to fix my GPS lock issues.

      [= Worked flawlessly.

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    5. Worked for me too. Thank you very much!

      ReplyDelete
    6. noob question, when you reflash the cm9 rom, is it a clean install? or do you pick up where you left off?

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      Replies
      1. I was not sure about this either, I went ahead and did it and my cm9 (which was alpha 1) was just as I had left it, all the apps and all the data in place.

        Delete
    7. This comment has been removed by the author.

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    8. I feel like such a noob. I've tried this like 5 times but it never reboots into GB.. ten minutes left on the utility download, so I'm trying again one more time.

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    9. Ok I followed directions word for word and it never reboots tried el29 and ff18 temp boots nothing reboots

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    10. Mine boots fine running el29 off internal, loads into GB but I can never get a lock on GPS. Inside, outside, cloudy, sunny, NOTHING! Any suggestions?

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    11. hi..Im student from Informatics engineering, this article is very informative, thanks for sharing :)

      ReplyDelete