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  1. Thread Author  Thread Author    #26  

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    Quote Originally Posted by lglou View Post
    How can i revert from LS670zvd to LS670zvc?
    In the revert/force flash thread referenced in the first post, it gives you the substitutions for Force Flash VC in the reference section. Just follow the Force Flash V9 instructions and substitute what is mentioned in the reference section.

    Though the chance for some type of failure is not high, I always suggest you make a backup before flashing.
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  2. Thread Author  Thread Author    #27  

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    Quote Originally Posted by skylacan View Post
    I cant seem to flash the stock recovery image, says something about a bad block in recovery and then out of space. I can flash thunderc and xionia no problem though.
    Are you sure you are using the one linked from the first post?

    Have you unzipped the file to get the recovery.img file?

    Could you give the commands you are using the flash and the output of the commands?

    I just downloaded the stock v9 recovery linked in the first post and the checksum matches what is expected.

    My guess is you specified something other than the "recovery" partition on the phone or you are trying to flash the zip file (renamed to recovery.img)

    The command is

    flash_image recovery /sdcard/recovery.img
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  3. #28  

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    I have unzipped everything from the first post to the root of my sdcard. I'm just hoping its not a problem with my device but its weird that the unofficial recovery images flash without issue.

  4. Thread Author  Thread Author    #29  

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    Quote Originally Posted by skylacan View Post
    I have unzipped everything from the first post to the root of my sdcard. I'm just hoping its not a problem with my device but its weird that the unofficial recovery images flash without issue.

    Can you type in an adb (root) shell

    cat /proc/mtd
    and post the output.
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  5. #30  

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    Here it is:

    dev: size erasesize name
    mtd0: 00700000 00020000 "boot"
    mtd1: 07c20000 00020000 "cache"
    mtd2: 00700000 00020000 "recovery"
    mtd3: 00140000 00020000 "splash"
    mtd4: 00700000 00020000 "FOTA_STO"
    mtd5: 09e80000 00020000 "system"
    mtd6: 0a4e0000 00020000 "userdata"
    mtd7: 00080000 00020000 "misc"
    mtd8: 00180000 00020000 "persist"
    #
  6. Thread Author  Thread Author    #31  

    Default

    Quote Originally Posted by skylacan View Post
    Here it is:

    dev: size erasesize name
    mtd0: 00700000 00020000 "boot"
    mtd1: 07c20000 00020000 "cache"
    mtd2: 00700000 00020000 "recovery"
    mtd3: 00140000 00020000 "splash"
    mtd4: 00700000 00020000 "FOTA_STO"
    mtd5: 09e80000 00020000 "system"
    mtd6: 0a4e0000 00020000 "userdata"
    mtd7: 00080000 00020000 "misc"
    mtd8: 00180000 00020000 "persist"
    #
    There were two explanation that I was looking at.

    First was there might be different sized recovery partitions on different models. However your recovery partition is the same size as other phones.

    The second explanation is that the recovery.img is a full backup of the entire mtd2 partition, even the portions that are empty. So the reason you are probably seeing the error is you actually do have a bad block (memory) in your recovery partition and the reason you see it flashing the v9 recovery.img is because it is exercising the entire range of memory in your recovery partition, whereas the other recoveries are only as big as the recovery needs, and/or they are smaller in general, so they are avoiding the bad block(s).

    You can try an updated flash_image to see if that helps (I didn't look at the source to see if it handles stuff differently, so I'm not saying it will behave differently)
    http://files.mysticmidnight.net/zefi...lash_image.zip

    You can also just try rebooting to recovery and seeing if the V9 recovery comes up. There is a chance the important parts of the recovery.img were already written before hitting the bad block, so even though there is a write error, it isn't relevant. Do not use "adb reboot recovery" as I believe that will write stuff to the misc partition which might get you into a loop if your recovery is bad. I think using Power Down / Home + Vol- + Power will be ok.

    I can also post a minimal recovery.img with the empty blocks removed to see if that avoids the bad blocks. Let me know if that is something you want to try.

    You could also just run the V8->V9 update.zip. It should create the recovery partition by patching the boot partition. It should work in theory, but again, I haven't traced the exact mechanisms it is using to handle the various reboots and writing of flash memory, so couldn't tell you for sure it wouldn't get you into a boot loop.

    There might be a way to format the recovery partition and lock out the bad block, but I don't know enough about the MTD tools to advise you on that.

    I'm just warning you in advance about potential problems. I'm not saying any of these are likely.

    So IMO the problem is with the flash memory on your device.
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  7. #32  

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    So let me get this straight: my phone is vd updated from lg tool and rooted so to unroot I just have to manually flash the v9 stock recovery, then use the lg updater tool to flash vd again and then follow directions 3-4?
  8. Thread Author  Thread Author    #33  

    Default

    Yes. As a side bonus, if you were planning on returning your phone but changed your mind, your system is still rootable.

    If you are already running stock recovery, you could just flash V9 or VD, whichever is appropriate for your unit (new or old LCD).
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  9. #34  

    Default

    Quote Originally Posted by sfhub View Post
    Yes. As a side bonus, if you were planning on returning your phone but changed your mind, your system is still rootable.

    If you are already running stock recovery, you could just flash V9 or VD, whichever is appropriate for your unit (new or old LCD).
    I have a custom recovery
  10. #35  

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    I'm trying to manually flash v9 stock recovery and I tried it on terminal and it says cant read flash image and when I try it using adb shell its saying it doesn't have a path and adb is not recogninzed as an internal or external command? I have this phone on e bay and I need to unroot it today
  11. #36  

    Default

    Ok I flashed the v9 stock recovery and it worked, but my phone is still rooted and I still have the thunder rom. I don't know what to do next?
  12. Thread Author  Thread Author    #37  

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    Quote Originally Posted by tcol41 View Post
    Ok I flashed the v9 stock recovery and it worked, but my phone is still rooted and I still have the thunder rom. I don't know what to do next?
    Did you run KP500 and force flash ZV9 (or VD if you have the new LCD)?

    I don't see how you can still have Thunder ROM if you Force Flashed V9 successfully.
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  13. #38  
    00_wrath_00's Avatar

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    657 Posts
    ROM
    Running Quattrimus ICS

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    can't you just force flash back to zvc? when I done it it gave me complete stock rom and recovery. be easier I think if you want to go back to stock.
  14. Thread Author  Thread Author    #39  

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    Quote Originally Posted by 00_wrath_00 View Post
    can't you just force flash back to zvc? when I done it it gave me complete stock rom and recovery. be easier I think if you want to go back to stock.
    1) Force flash often (but not always) leaves your existing recovery in place
    2) Force flash doesn't touch your /data so your apps and personal info are still there
    3) Force flash doesn't touch your NVRAM so your Sprint login and phone # are still there

    Certainly you can skip steps if they aren't important for your needs.
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  15. #40  

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    I need help. Need to return my phone back to sprint and cant find any files.
  16. #41  
  17. #42  
    grantheppes's Avatar

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    AOKP

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    Quote Originally Posted by sfhub View Post
    No need. LG Software Updater can flash you directly to whichever stock version you want.
    Really? Cause I plugged mine in with the Reborn Rom and it said phone was up to date.

    Anyone know if I can just flash these with ROM manager?
  18. Thread Author  Thread Author    #43  

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    You need to use LG Updater through KP500 to (force) flash to whichever version you want.

    Don't use ROM manager, it isn't compatible with this phone.
    [How-To] Rooting LS670ZVH
    Installed ZVH by mistake? Use simple update.zip to revert to ZVD / Froyo
  19. #44  

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    I hope this works, I bricked my optimus s in clockwork mod recovery...
  20. #45  

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    Thanks for this!
  21. #46  

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    Thank you!
  22. #47  
  23. #48  
    clarkpd24's Avatar

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    gROM 1.1.5

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    Quote Originally Posted by sfhub View Post
    Simplified UNROOT and return to STOCK procedure for users already rooted
    (these instructions are written at a summary level so you need to know some basic terminology/techniques):

    1) Manually flash the stock V9 recovery (Reference Section below). Skip if you already have stock recovery.
    2) Force Flash V9 (or V8, VC, VD in KP500 reference section, use VD if you have new LCD) - see KP500 thread - skip step (u), ie step (3) in the summary
    3) Power down phone and boot into recovery (Home + Vol- + Power)
    4) Choose "wipe data/factory reset" if you want everything factory fresh or "wipe cache" if you want to keep your data and run stock

    NOTE: If you want to scrub even your Sprint data login information and phone # from NVRAM, for example if you were to transfer/sell the phone to someone else, perform a ##786# reset from the dialer in Android (you'll need your MSL/SPC/Service Code - ask Sprint or use CDMA WS)

    Reference:

    Manually flashing stock V9 Recovery image (requires root)
    UNZIP flash_image and stock V9 recovery.img to /sdcard
    Exactly what I needed. Thanks a bunch.
  24. #49  

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    i need to do this
  25. #50  

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    thanks , recover to stock
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