Software update: T-Mobile myTouch 3G Slide

Understanding the Update

The most recent T-Mobile myTouch 3G Slide software update  to software number 2.15.531.5 provides a security patch and improves software stability. The update is a tethered update available at

Note: If you cannot access the update at, please click the following link, select save, and follow the instructions under Resolution Steps below: T-Mobile myTouch 3G Slide software update.


Software versions

See also: Check your software version.


  • Android version 2.2 / Software number 2.15.531.5

    Prerequisites for Tethered Update


    Note: Do not unplug the device from the computer until instructed to.
    • Android version 2.2.1 / Software number 2.15.531.5
    • Tethered USB update
    • Approved 8/10/2012
    • Security patch
    • Improved software stability
    • Windows based PC with an active internet connection
    • USB cable supplied with device
    • Device is running Software number 1.27.531.1 or 1.35.531.1 or 2.15.531.3
    • Device software is not rooted
    • More than 50% battery life
    • Task manager or task killers on device removed or turned off
    • 250 MB available memory (File size of update is 24.2 MB)
  • Android version 2.2 / Software number 2.15.531.3
  • Android version 2.1-update 1 / Software number 1.35.531.1 and 1.27.531.1




Resolution Steps

Download update from HTC


Warning: Installing the ROM Update Utility (RUU) will delete all information and data on your Android phone. Back up your data before proceeding.


  1. Go to to download and perform the update. The instructions below will also be available on HTC support.
  2. Please click the View ReadMe  for complete instructions.
  3. On the Welcome screen, click Next to  begin the RUU (tethered) installation.

  4. Put device into Fastboot  mode
    • Turn off the phone.
    • Hold volume down and then  press the power key to enter bootloader.
    • When bootloader menu shows,  press Power button to select Fastboot.
  5. Check the listed  instructions in the dialog box and make sure you have done them. Click Next to proceed.

  6. A message will then be  displayed indicating that the utility is verifying and acquiring information  about the Android phone as preparation for the update process. Wait for this  verification process to be finished.

  7. After  the verification process, current information about the  Android phone will be displayed. Click Update to proceed.

  8. Below the Android phone information, information about  the current image version and the new image update version will be displayed.  If you are sure that you want to install the new RUU, click Next to  proceed.

  9. A confirmation message will  appear and show the time it will take to install the necessary files (including  radio image) to the Android phone. Click Next to begin the update. A  progress bar will run through the screen during the update process.


    In the middle of the update process, the progress bar  may stop moving. This is normal as the RUU is automatically adjusting itself to  complete the update process.

  10. When you see the screen below, it means the RUU update  is complete. Click Finish to exit the utility.