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How To: Unroot the HTC G1 / Dream

September 23, 2010 in Android How To's, Featured, How To's, HTC G1/Dream How To's, Video

I. Before You Begin

1. The only real reason to unroot a phone is to send it in for warranty, otherwise just flash a different custom ROM.

II. Format the SD card

1. On your phone go to Settings > SD Card and Phone Storage

2. Select Unmount SD Card

3. Then select Format SD card

III. Unroot the Phone

1. Download the latest firmware file for your device and the Original SPL and save it to your computer. (if anyone has other .nbh firmware files for Dreams from other countries please post links in the comments and we’ll add them to the post).

T-Mobile US G1

Original SPL

2. Plug your phone in via USB cable and mount the sd card so we can transfer files to it.

3. Copy the .nbh file and the SPL update.zip file to the root of the sd card (NOT in any folders, just on the sd card itself).

4. Unplug the phone.

5. Turn off the phone.

6. Turn the phone back on by holding down Home and Power (keep holding it until the recovery screen comes up)

7. In recovery mode we are going flash the update.zip to apply the SPL update.

8. Once it is done, the phone should reboot.

9. Turn off the phone.

10. Turn on the phone by holding down Camera and Power.

11. It should automatically recognize the .nbh file and ask you to push power to begin.

12. Once it is done, push the trackball to restart the phone.

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56 responses to How To: Unroot the HTC G1 / Dream

  1. Prabdeep Mathone said on February 1, 2011

    my phone is soo messed up now…

  2. Edwardstz said on February 12, 2011

    when i turn it on it shows up on the rainbow screen somene help please

  3. Daniel_bahrami said on February 22, 2011

    I just did this and now my phone is at the welcome to tmobile g1 screen and im not able to sign into my google account. How do i pass the activation again?

  4. Xxarkoxx314 said on February 26, 2011

    Format SD First Then Flash Update.zip and then install .nbh

  5. Djwebmasterz said on February 28, 2011

    If anyone is having problem with it, well the best thing that I did was to go into recovery mode, then wipe. Select the first option and then run the rest of the instructions. Shouldn’t be a problem after that.

  6. dhann said on March 11, 2011

    i from singapore can be done to my htc dream thnks

  7. dhann said on March 11, 2011

    im from singapore, can my set be root? is my set compatible with t-mobile us g1?

  8. Anonymous said on March 17, 2011

    This completely bricked my phone. Thanks for nothing. Experienced rooter and followed your directions to a T.

  9. Mrguy1013 said on April 17, 2011

    Thanks unlockr! Worked perfectly.

  10. Mariocena07 said on May 30, 2011

    e: cannot open /cache recovery/command

    >> in this line.. what should i do.. i don’t know what command is it..

    >> HEEEEEEEEEELLLLPPP…

  11. Dre said on August 18, 2011

    I thank you soo much for this!  I followed each step and everything worked out just fine! Thank you again!

  12. Cody Bruce said on October 10, 2011

    I can’t get to the recovery screen. I boot up my G1 while holding the power and home buttons and all I get is the caution symbol and a picture of a phone. Please help!

  13. Levi Mitchell said on October 16, 2011

    dude thanks a million this really helped a lot thumbs up heck two thumbs up lol

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