How To Install The HTC Thunderbolt 1.70.605.0 Update


08.07.2011

How To Install The HTC Thunderbolt 1.70.605.0 Update

Freshly backed out of the oven, papa Verizon has prepared a new update for all HTC Thunderbolt users. Tonight, the upgrade will be delivered using an over-the-air method, but the kind folks over AndroidPolice snapped the cookie earlier today. Although it’s not the long awaited Android 2.3 Gingerbread, this file comes to fix numerous bugs, including the rebooting one, and to add some minor features. If you are eager to install the 1.70.605.0 update on your HTC Thunderbolt today, you can download the file and follow the steps listed below.

As seen in the picture below, by updating the HTC Thunderbolt to the latest version, Verizon will improve your data connectivity, enhance the call history view, fix the random rebooting bug, add a pop-up window for the Bluetooth Discovery Mode and enable a people search function. This update will bring the baseband all the way up to 1.39.00.0613w, 0.01.69.0613w_1 and will bring the radio up to a newer version than MR2 / MR2.5.

Before we begin, you must consider the fact that this update is somewhat different from the OTA version. Weighting over 400 MB, it has all the files needed for an OS replacement, as the over-the-air upgrade has only 34 MB. What we are going to install below will completely wipe the operating system and replace it with this version. The Verizon OTA will just upgrade the needed files. So before proceeding, make sure you have backed up all the needed files.

Another nasty thing about this version is that it breaks root access. After installation, you will have to re-root the Thunderbolt.

Verizon update changelog

How to update the HTC Thunderbolt to 1.70.605.0 firmware
  1. Download the update and rename it to PG05IMG.zip.

  2. Connect the smartphone to your PC / Mac and move the file on the root of your SD card.

  3. Power the phone off.

  4. Hold Volume Down and Power buttons until the phone enters the bootloader. The TB should begin flashing the update and after several minutes the device will reboot.

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