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Root [GUIDE] FroYo 2.2.1 for Root Users! (Updated 3/3/2011 at 3:40 pm EST - NOW EASIER THAN EVER!)

Discussion in 'Android Devices' started by Trident, Jan 22, 2011.

  1. fullhouse233

    fullhouse233 Active Member
    16

    Nov 26, 2010
    27
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    16
    CNC Machinist
    USA, South Dakota
    step 4 says to download android_winusb.inf but unfortunately nothing downloads just opens up a screen with the info. Is the link broke?
     

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  2. netizenmt

    netizenmt Well-Known Member
    88

    Oct 3, 2010
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    Technical Support
    Mansfield, OH
    Well, we were told to wait, so it will be only at the mercy of the ROM Gods that we get a solution. I currently have Froyo running with Amon Ra Recovery and am rooted with the correct SU in place, but no bootloader. Now what can I do to resolve that in order to use future ROMs? I, too, don't want to run the risk of killing my phone again. Death@All110 spent hours restoring it to life.

    I think the question that really needs answered is: can we flash a stock Nandroid at this stage and go back and do it right?
     
  3. Cjohn8792

    Cjohn8792 Well-Known Member
    36

    Sep 8, 2010
    146
    9
    36
    Operator
    Upstate,NY
    Do I go straight from 2.1-update 1, running velocity .4, vs640vz8, vs740mv7.5210.1013 to this 2.2.1? or is there something I have to update in order to follow these steps. I have rom manager and clockwork, unsure if I have fastboot. I lack the knowledge about fastboot and how to use it. Thanks in advance for any information.
     
  4. socobandit

    socobandit Well-Known Member
    38

    Aug 23, 2010
    230
    24
    38
    SE PA
    so, if I'm correct, on my wife's rooted ally, i can skip right to step 28? No factory reset is done, right? she got mad when i did something and she had to reset all her ringtones, email, etc.
     
  5. k.c.cole

    k.c.cole Well-Known Member
    73

    Jul 28, 2010
    363
    71
    73
    Technical Support Trainer
    Colorado

    Would it be better then to restore and have fastboot for the future? Will it be necessary for any ROMS that may come along?
     
  6. bnitty

    bnitty Well-Known Member
    38

    Dec 15, 2010
    242
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    Wichita/Lawrence, Kansas
    has anyone successfully did it yet?
     
  7. Matt's 175

    Matt's 175 Well-Known Member
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    Sep 15, 2010
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    Pull the battery and leave it out? Or?

    So at what point do you put the battery back in?

    Just have to be sure because for some reason, my battery is a MUTHA to get out.
     
  8. d0nd0n

    d0nd0n Well-Known Member
    16

    Sep 23, 2010
    55
    7
    16
    N/A
    Ohio
    I have successfully used this guide. I had to change some things I did for my personal experience, but it was successful.

    Any 2.2 custom ROMs that come along will require that this guide be completed first in order to use their custom ROM.
     
  9. d0nd0n

    d0nd0n Well-Known Member
    16

    Sep 23, 2010
    55
    7
    16
    N/A
    Ohio
    You pull the battery out and slip it back in.
     
  10. dautley

    dautley Well-Known Member
    253

    Jul 23, 2010
    1,823
    502
    253
    Dickson, TN.
  11. d0nd0n

    d0nd0n Well-Known Member
    16

    Sep 23, 2010
    55
    7
    16
    N/A
    Ohio
    Right click the link and "Save file as..." or the equivalent.

    The file may save as a .txt file. You have to enable Windows to show file extensions in order to take out the .txt extension and leave it with .inf

    To enable Windows 7 & Vista to show file extensions, do this: In the folder where the android_winusb.inf.txt file is saved, click on Organize and then click "Folder and search options", go to the "View" tab, and uncheck "Hide extentions for known file types" and click Apply and OK. You will notice the file is now named android_winusb.inf.txt - simply right click -> Rename and remove the .txt from the name and click OK on the warning popup.
     
    dautley likes this.
  12. Matt's 175

    Matt's 175 Well-Known Member
    43

    Sep 15, 2010
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    [convincing voice] Hello Asurion??? I lost my phone at work and..... [/convincing voice]

    ;)
     
  13. netizenmt

    netizenmt Well-Known Member
    88

    Oct 3, 2010
    490
    111
    88
    Technical Support
    Mansfield, OH
    I would plan on her getting mad again. :D
     
  14. phillk6751

    phillk6751 Active Member
    16

    Jan 22, 2011
    32
    6
    16
    so this will only work for those of us who did NOT update with LGMU to 2.2.1 already, correct? I tried it and LGMU for this method stated an error and wouldn't flash back to stock....

    Update:

    It says specifically: Updating is not possible any longer due to a fatal error while the LG Mobile Phone Software Update.
     
  15. rjglenn

    rjglenn Well-Known Member
    113

    Dec 17, 2010
    719
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    113
    Firefighter, agrimechanic
    North Florida

    Yes, this works. I was abe to do this but if I had to do it over again,I would not have applied the LGMU first. Thanks to the devs for developing this solution. Donation to follow...
     
  16. bnitty

    bnitty Well-Known Member
    38

    Dec 15, 2010
    242
    17
    38
    Wichita/Lawrence, Kansas
    will this mess up my SD card at all? i have tons of pics on there i don't want deleted.
     
  17. yohobojo

    yohobojo Well-Known Member
    63

    Oct 29, 2010
    416
    46
    63
    Student
    Kennesaw, Georgia

    I meant like, since they are no froyo based roms rite now, should i go froyo. I kno to flash froyo based roms you must have froyo.
     
  18. Goonie21

    Goonie21 Well-Known Member
    63

    Jul 13, 2010
    177
    42
    63
    Mac tech support
    Memphis
    I would highly recommend you back up your SD card to your computer if you have important stuff. You never know when the SD can fail or phone get stolen or dropped in water.
     
  19. TimUSA

    TimUSA Member
    16

    Oct 19, 2010
    11
    2
    16
    I am getting the following error at step #17. It says cannot complete and prompts me to do a battery pull and hit restart.

    Code (Text):
    1. <<<<<<1st Attempt>>>>>>>
    2.  
    3.  
    4. 12:54:45 : [C:\LGMobileUpgrade]
     
  20. jmar

    jmar Nexican
    523

    Sep 27, 2010
    4,851
    3,131
    523
    Male
    Sales
    San Jose, CA
    EDIT: (original question removed) got amonra to stick...i was friggin tired last night and forgot to remove install-recovery.sh

    thanks drellisdee

    thanks to lonewolf, dots, afteraffekt, jazz, death, trident and everyone who is helpful, respectful and truly cares about this community.
     
  21. yohobojo

    yohobojo Well-Known Member
    63

    Oct 29, 2010
    416
    46
    63
    Student
    Kennesaw, Georgia

    Dang it. Wanted to use amonra...
     
  22. xtcvapor

    xtcvapor Well-Known Member
    18

    Sep 17, 2010
    63
    11
    18
    North Carolina
    This is simply not true. I used LGMU to 2.2.1, and flashed back to ZV6, then flashed a nandroid (when I had ZVC), then wiped data, cache, Dalvik-Cache, flashed velocity .4
     
  23. flyinjoe13

    flyinjoe13 Well-Known Member
    53

    May 18, 2010
    463
    70
    53
    I'm going to do this, but want to clarify something. If i'm not a fan of the way Froyo runs on my Ally, is it still possible to flash a backup copy of my Eclair setup? I've heard the bootloader is changed with the Froyo update and going backwards may not be possible. I want to make sure I can go back because i'm helping someone with something.
     
  24. Goonie21

    Goonie21 Well-Known Member
    63

    Jul 13, 2010
    177
    42
    63
    Mac tech support
    Memphis
    Afaik once you go froyo you can't go back.
     
    flyinjoe13 likes this.
  25. jmar

    jmar Nexican
    523

    Sep 27, 2010
    4,851
    3,131
    523
    Male
    Sales
    San Jose, CA
    Yes you can do all this. But in order to get 2.2.1 with root and recovery you have to start at v6 and follow all the steps. you will not be able to flash a froyo rom without doing this method.
     
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