How To Install Engineering bootloader


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  1. jcase

    jcase Well-Known Member This Topic's Starter

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    This is for people that used either of the leak root methods. The engineering bootloader is an unsecured bootloader, and is better in many ways (google it I am not explaining why). Just say its harder to brick with it.

    Before attempting, please check your md5sums.

    I want to thank Framework for being my punching back and helping with this. And the desire guy's who's work stuck in my head and gave me this idea (Sorry I forgot who you are!!).

    Needed Files:
    Original Root Rom - PB00IMG.zip - 63eacc5ede3b179f95dc22d8ef585f94
    Custom Misc Image - custom.img - 19de71cf42b3a7992d2660e7980c50bf
    Fastboot for linux - 4baca1f80fc9bb31aa75fd3fee2cc36b
    Amon's Recovery - 354d30c38c59b442340c8b72aa9f547e
    Windows users should have fastboot in the sdk, and mac users I dont have a copy of yours.
    lash_image - 16559f2c27d08ff1ddfcaca05fbf10fb

    Step 1:
    Get follow root tutorials and get amon's recovery installed. If you want to skip installing a new rom after rooting, You can flash EngTools.zip will root your device . If you flash engtools you can skip step 2.

    Step 2:
    Take a nandroid backup, if you wish as this will wipe your device.
    Code (Text):
    1.  
    2. adb push flash_image /data/local/flash_image
    3. adb shell chmod 777 /data/local/flash_image
    4.  
    Step 3:
    Push custom.img to your phone
    Code (Text):
    1. adb push custom.img /data/local/custom.img
    Custom.img is the misc img for your device, it contains the mainversion. I took one off a rooted phone and hex edited the version to be lower than the original root rom so it will flash.

    Step 4:
    Copy PB00IMG.zip to your sdcard

    Step 5:
    Flash custom.img

    If you flashed engtools3.zip (http://www.multiupload.com/L97EUYBG3V)
    Code (Text):
    1. adb shell flash_image misc /data/local/custom.img
    If you pushed flash_image
    Code (Text):
    1. adb shell /data/local/flash_image misc /data/local/custom.img
    Step 6:
    Reboot to Bootloader and flash PB00IMG.zip
    Code (Text):
    1. adb reboot bootloader

    After the new rom is flashed, you can now use fastboot to flash a recovery image while in the bootloader

    Code (Text):
    1. fastboot flash recovery recovery.img
    Enjoy

    Like my work? Buy a bum a beer downtown or donate to local homeless youth org.
     

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    ACD168, Indians, jonathanphx1 and 7 others like this.
  2. Papadroid

    Papadroid VIP Member VIP Member

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    Bump!

    For those that just rooted their hboot 1.49 s-on phones and think you are fine now, you really should follow the above instructions from jcase and get the hboot 1.49 s-off. As jcase said with 1.49 s-on it can increase your chances of bricking your phone as compared to s-off. Also if you ever have to use flashboot command to flash something like a new kernel you will get permission denied with the s-on.

    Thanks to jcase for providing the instructions to do this.
     
  3. jcase

    jcase Well-Known Member This Topic's Starter

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    I don't think it has an increased chance of bricking, its just that s-off will make it easier to fix problems that may arise.
     
  4. wendroid

    wendroid Member

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    What does this mean? I have to know before attempting. :)
     
  5. kobel1up

    kobel1up Well-Known Member

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    I can't get custom.img to be recognized in my cmd prompt. I am stuck. I installed the engtools.zip on my phone but still nothing.
     
  6. Demache

    Demache Well-Known Member

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    It gets rid of the secured bootloader. So you could flash an alternate kernel or whatever if you wish. I *also* believe it allows you to use ADB in fastboot, making it easier to fix problems if your phone becomes unbootable and you can't get into recovery (and this actually happened to me before, lol).

    I just went ahead and did it, since there are definitely no drawbacks to doing it. It would also allow you to downgrade to 1.5 if ever wanted to for some odd reason.
     
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  7. bberryhill0

    bberryhill0 Well-Known Member

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    Now that I have rooted and overclocked my leak 3 Eris this would be the obvious next step but I don't understand the instructions at all.
     
  8. kobel1up

    kobel1up Well-Known Member

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    I know what you mean bberryhillo. Im stuck on step 5.
     
  9. gpa111

    gpa111 Well-Known Member

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  10. gpa111

    gpa111 Well-Known Member

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    Think its working.. :)
     
  11. gpa111

    gpa111 Well-Known Member

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    Im getting fastboot permission denied on step 6, and fastboot devices lists nothing, any ideas?
     
  12. EricB

    EricB Well-Known Member

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    Same here, I can't get it to work at all. I thought I did, but I'm still 1.49 S-On
     
  13. Papadroid

    Papadroid VIP Member VIP Member

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    Did you flash the PB00IMG file, you're not going to use adb until after you flash this file.


    Which method did you use to root?
     
  14. EricB

    EricB Well-Known Member

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  15. gpa111

    gpa111 Well-Known Member

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    Yes I did, then right after it flashed I was sitting in the FASTBOOT USB page with that highlighted, and my mac says permission denied to any fastboot command.

    I'm going to try it on my windows partition soon.
     
  16. wendroid

    wendroid Member

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  17. ppbb

    ppbb Well-Known Member

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    stuck at step 5 too. its no clear to me where the downloaded files need to be saved. onto the phones sd card or the tools directory in sdk?
     
  18. large

    large Member

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    When I boot into the bootloader and flash the pb00IMG.zip it goes through the first screen then on the second screen it says
    "CID incorrect!
    Update Fail!
    Do you want to reboot device?
    <Action> Yes"

    Some other things...
    PB00100 XC
    HBOOT-1.41.0000 (PB0010000)
    MICROP-0111
    TOUCH PANEL... (not important)
    RADIO02.42.00.04.12

    Anyone have any ideas why I get this strange CID error?
     
  19. banduraj

    banduraj Well-Known Member

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    Is there any way to flash this bootloader without re-flashing a new rom. I just flashed a rom and got it set up the way I like it. I would really hate to flash again.
     
  20. scary alien

    scary alien not really so scary Moderator

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    banduraj,

    I'm not advocating using this thread / method since I haven't done it myself (I rooted using the old / first root method, so my bootloader is already S-OFF), but you should be able to take a Nandroid backup of your current setup and then restore it later.

    Be very careful! As erisuser1 has pointed-out in numerous posts/threads: this is the single most dangerous thing you can do to your phone; reference this post:

    http://androidforums.com/eris-all-t...pcs-no-scripts-needed-easy-2.html#post1416274

    and this

    http://androidforums.com/eris-all-things-root/125436-detailed-leak-root-tutorial-10.html#post1401164

    Good luck!
     
  21. stagger

    stagger New Member

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    Sorry to bump this thread, but have a question regarding this.

    For someone that's rooted, did a data/factory reset & Dalvik-cache, flashed to a new rom (in my case KaosFroyov38), do the same steps still apply? I just want to get my eris to S-OFF.
     
  22. erisuser1

    erisuser1 Well-Known Member

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    If you just want to get the 1.49.2000 S-OFF bootloader installed, it is probably easiest to just download the "erisengspl.zip" from this post on XDA and flash it similar to the way you would flash a ROM - the only difference here is that you are not replacing a ROM, so you would just perform the flash operation - no wiping or any other operations.

    Doing things this way insures (because of the ROM-signing operation) that file corruption risks will be minimized.

    The MD5 sig of "erisengspl.zip" should be df014009668389ef145fbb047b5ec56c

    If you are interested, have a look at previous comments I made on this flash.

    eu1


    .
     
  23. scotty85

    scotty85 Guides Guide

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    i just downloaded "erisengspl.zip" file and flashed it. seemed to work,and before the skateboard guys i got a quick pic of an alien jumping out of box. came back up just fine,powered off,then into fastboot and im on 1.47.0000 s-on :mad:

    i rooted from the ota 2.1 using the market app,and am running nonsensikal 16.1

    any ideas? :confused:

    edit:The MD5 sig of "erisengspl.zip" is df014009668389ef145fbb047b5ec56c
     
  24. erisuser1

    erisuser1 Well-Known Member

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    I have tested installation of it (erisengspl.zip) with both the 1.49.0000 and 1.47.0000 S-ON bootloaders on the phone, and it only seems to work correctly with the 1.49.0000 bootloader.

    Your alternative is a multi-step process:

    - Make a Nandroid backup of your current ROM
    - Flash the misc.img from the (jcase) "Flash any RUU" thread (XDA)**
    - Flash the Root ROM (PB00IMG.ZIP) using HBOOT
    - "root" the Root ROM (One Click or Dummies), or flash Amon_RA's recovery with fastboot (since you will have the S-OFF bootloader at this point),
    - restore your Nandroid backup.

    That's an outline, (not a spoon feeding)... but it will work.

    ** make sure to read that thread far enough along to pick up the correction to Jcase's original command sequence.


    eu1
     
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  25. scotty85

    scotty85 Guides Guide

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    thanks for the outline. if im understanding it correctly,ill need to do the 2nd step following jcase's directions from the computer,not simply flashing it in recovery as i did the erisengspl.zip file.

    my desktop just crashed so i guess when i get that figured out ill read up on how to do that. i dont want to do too much messing with my phone using the GFs laptop ;)

    i just got this phone used,and for cheap. :) so ill never have to return it to stock to send it back verizon. as long as i can get to Amon_RA's recovery,ill never really need an unlocked bootloader, so i guess it can wait a few days
     

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