Thunderbolt MR2 Update File Leaks


Need that all-important MR2 update for your Thunderbolt ASAP? You’re in luck as our friends at Android Police have gotten their hands on the leaked update file. Changes include the following:

  • Fixes random reboots
  • Improves GPS locking
  • Improves signal strength
  • Add 3G/LTE toggle in settings
  • And more

Those bolded ones sound pretty sweet, but all of these fixes and enhancements are more than welcome. If you’re eager to flash this, be sure to follow the following instructions, rooted or otherwise. [Android Police, Droid Life]

*Note 1 – Rooted users, DO NOT try to flash the RUU or you will brick your phone.

*Note 2 – Non-rooted users, the RUU will wipe everything from your phone.

*Note 3 – Rooted users, you will need the new radio.  [Instructions]

Download (non-rooted users):  Full MR2 RUU

ROM Download (rooted users):  Flyweight (deodexed and debloated) | PlainJane v3 (stock rooted)

Instructions (non-rooted users):

  1. Download the full RUU from above, and re-name it to PG05IMG.zip
  2. Place PG05IMG.zip on the root directory of your SD card (not in a folder).
  3. Turn off your Thunderbolt.
  4. Holding Volume Down and then Power simultaneously until the phone boots into the bootloader.
  5. The file should begin flashing the update immediately.
  6. Wait, up to several minutes, for your device to reboot.

Instructions (rooted users):

  1. Flash the new radio we’ve listed in “Note 3.”
  2. Download one of the ROMs from above and place it on your SD card.
  3. Boot into recovery from ROM Manager.
  4. Create a backup.
  5. When that has finished, “install zip from sd card” and choose the ROM you downloaded.
  6. Install it and enjoy a stable device.


Quentyn Kennemer
The "Google Phone" sounded too awesome to pass up, so I bought a G1. The rest is history. And yes, I know my name isn't Wilson.

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  1. It will wipe EVERYTHING? So, I should back-up my pictures and such right?

    1. Your pictures will remain if they aare on the SD card

      1. Could I copy all my files onto my computer then place it back into my phone after the update? I really hate not having GPS :*(

        1. So I updated my phone and the GPS still sucks! But the ability to switch from LTE to CMDA is cool and vice versa.

          1. *update* Been playing with it more and it seems that that when I have wifi on it will still connect to 4G from time to time for no reason… is there a way to flash backwards?

  2. Can’t someone add user data to the ruu? I’ve seen it in previous images.

  3. can you save app data without being rooted?  Would hate to lose the valuable app data like Angry Birds game saves.

    1. 3in1 Angry Birds Backup app… you’ll be good to go.

  4. Has anyone actually done this yet? Reports? Feedback? 

    1. i just did mine and had issues with just Internet connectivity. GPS is working fast. Hotspot free promo offer got booted off of. 

  5. so far so good on my TB. flash the MR2 by hboot then the ROM  Flyweight and everything is running great

  6. If you have an “Weiner” pictures make sure you back them up ;-)

  7. Loving the update. No reboots new 3G symbol, 2 different boot animations initial and after, GPS is waaay better , more fluid transitions. One problem it will not switch over to the new market. Just did hard reset didnt fix. So I do not have all my apps. Its better than reboots though so I can deal

    1. The latest Market version fix: you have to hit Menu, then Settings, go to Applications, Manage Applications, All, Market, make sure you “Clear data” and “Clear cache”. You will not see the latest version of Market, until after you complete this and reboot your TB.

      1. Thanks I wish I had figured that out before I hard reset. I appreciate it though, for future reference 

      2. that didn’t work for me

  8. Its fixed I jumped the gun, cheers.

  9. any battery improvements?

    1. Incredible battery improvements, it seems… I’ve been awake, out and about for 12 hours today… down to 51% battery life.

  10. PGO5IMG is setting on my SD card directory, but I don’t think it flashed. What should I see for software information status after it installs correctly?  Current;
    kernel =  Mar1
    build   =  1.13.605.7 CL341545


  11. My Thunderbolt is what it should have been at launch now, Finally…..phew;)
     I was at my wits end. Next stop Galaxy S2 (Function) bring it on Big Red.

  12. I can’t activate my Google Apps account after flashing.  Any ideas?

  13. I am interested in knowing if this fixed the 4g issue?  Is this “THE” HTC update which will solve it?  Last night, June 14th, I got an update from Verizon.

  14. I just got the update OTA.

  15. Was rebooting a dozen+ times a day. Upgraded about 7 hours ago and have not rebooted since. 3G logo looks a little different, did not lose any information/pictures/etc. but did have to reinstall the apps. Anything that is saved on your SD card should be fine. Thank God this BS is over.

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