Checksum proof that 2.1 leak v3 is 99% identical to OTA 2.1General


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  1. thenestor

    thenestor Well-Known Member This Topic's Starter

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    I just spent half an hour going through each file in the OTA upgrade ZIP and comparing its CRC (checksum) to the same exact file in the "leak v3" PB00IMG.ZIP, including all of the files inside system.img.

    Process:
    First off, just by opening the two ZIP files with 7-Zip I can see that the boot.img, radio.img, and recovery.img are identical. In both ZIPs, their CRCs are EA7388FA, 54C41EEC, and 3F0153F1 respectively.

    Since the OTA breaks down system.img into just the files that need updating (for the purpose of keeping the file size as low as possible), the only way to compare the files with system.img in "leak v3" was to use the root ROM created from "leak v3". (Thank goodness there's an unadulterated ROM of it, so the original CRCs are intact!) One by one, I compared the CRCs of the files in the OTA's system folder with the same files in the "leak v3" system folder.

    Findings:
    The files that are in the OTA are completely identical to the ones in the leak v3 system.img, with only one exception: The OTA contains an additional app called UpgradeSetup.apk. Obviously, it's only necessary for executing the upgrade.

    The OTA also does not include userdata.img or the PRL file because you're not doing a full wipe. You retain your existing user data and PRL, or you can do *228 x2 to get the latest PRL for your network. (You can also do a factory reset to remove both your user data and PRL.) The OTA also doesn't contain an updated version of HBOOT, which I would argue is the biggest difference. More on that in this thread.

    Visual:
    To make it easier to compare the CRCs in these images (besides the app folder), I removed all of the files from the "leak v3" ROM that were left unchanged in the OTA. After doing that, the folder CRCs matched, with the exception of the "app" folder since the OTA has that one additional file.

    Images below. Hit "show" to view.
    [​IMG]

    [​IMG]

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  2. xx_bishop_xx

    xx_bishop_xx Well-Known Member

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    Thank you for that work. I'm trying to figure out which threads to read now that OTA topics don't interest me any longer. :)
     
  3. NKT

    NKT Well-Known Member

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    Thank you for proving my statement.

    Of course you're not going to convince anyone of this fact...
     
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  4. pea

    pea Active Member

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    So whats that 1% that isnt identical :D
     
  5. buff12db

    buff12db Well-Known Member

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    It's a little unfortunate that they are the same. I was looking forward to pinch zoom in google maps. At least now, I'm not too concerned with getting the OTA. I wish there was a way to deny the OTA so I don't have to go through the process of setting up my home screens again.
     
  6. Tooleman694

    Tooleman694 Well-Known Member

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    If it was identical you would be able to flash to the OTA right now..
     
  7. wildtouch83

    wildtouch83 Well-Known Member

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    an un-touched HBOOT. :D



    Thanks for taking the time to go through and verify all of this information.
     
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  8. xx_bishop_xx

    xx_bishop_xx Well-Known Member

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    Indeed, why would anyone believe someone with a mere 3000 "thanks"...:D
     
  9. bjanow

    bjanow Well-Known Member

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    Great investigating and quite convincing. But.. it's the hboot that is of concern now. Has anyone you know, and I mean know in the biblical sense, that was on V1 or V2, received the OTA? Has anyone with V1 or V2 been able to update manually to the OTA? If not, why not? If so, there is hope for future updates for the leakers.
     
  10. willdogs

    willdogs Well-Known Member

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    Thanks!!! I'm actually happy with my 2.1v3 (AKA OTA)

    I've been running it for a couple weeks now and couldn't be happier with my phone! Running smooth as silk!

    No Regrets here! Thanks!
     
  11. John58543

    John58543 Well-Known Member

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    I get the feeling that some of the 1.5ers are trying to rub it in the people who flashed leaks face that they got the OTA and we can't...funny...
     
  12. Papadroid

    Papadroid VIP Member VIP Member

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    No they can't do it either because of the HBOOT problem. Their bootloader was upgraded just like everyone on leak v3.
     
  13. Bishop

    Bishop Well-Known Member

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    Although I don't understand over 99% of what you said, I still thank you for doing the research. And I feel better with my v3 leak now.
     
  14. NKT

    NKT Well-Known Member

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    Everybody not running V3 should get the OTA.
     
  15. bjanow

    bjanow Well-Known Member

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    Which means no OTA either. What about bug fixes OTA?

    I got to get outta here. Been at this all day. Heading over to Verizon to find out what "my guy" knows. He's on the leak too.
     
  16. rick311

    rick311 Well-Known Member

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    but (from what i understand) the V3 leak wont allow root, and the OTA will. is that right?
     
  17. Tooleman694

    Tooleman694 Well-Known Member

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    Leak V3 was probably like Installing Windows 7 RC2.. it runs fine for the most part but you are stuck there.. and its not supported..
     
  18. xx_bishop_xx

    xx_bishop_xx Well-Known Member

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    Report back? Will ya?
     
  19. Papadroid

    Papadroid VIP Member VIP Member

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    Their best chance at fixes is to install leak v3.
     
  20. Shachren

    Shachren Well-Known Member

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    Can anyone hand me a link to the v3 leak? i cant seem to find it anywhere... Also, if i choose to, can i install a ROOT v3? From 2.1 v1 leak?
     
  21. Kevkelsar

    Kevkelsar Well-Known Member

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    No, no method of ROOTing has been found for any of the leaked versions.
     
  22. ssgtob1

    ssgtob1 Well-Known Member

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    OTA does not change HBOOT.....just waiting on a full battery to figure out if I can fully get root.....looks good so far....
     
  23. xx_bishop_xx

    xx_bishop_xx Well-Known Member

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  24. Shachren

    Shachren Well-Known Member

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    Ah well, worth a shot. Could you point me in the direction for a download for v3?
     
  25. Papadroid

    Papadroid VIP Member VIP Member

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    My response was in reference to people on leaks 1 & 2. They are all on the updated bootloader so they are not able to root.
     

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