To use your HTC device as a tethered modem, follow these steps:

1. Install the USB Driver downloaded from this page
2. Reboot your PC if needed
3. Connect your device to your PC using the included USB Cable
4. After connecting the USB cable, change the connection type in the notifications window from Disk Drive to USB tethering

Hardware Requirements (PC)

1 GHz or higher processor clock speed recommended
512 MB of RAM or higher recommended
Super VGA (800 x 600) or higher-resolution video adapter and monitor
300 MB of available free hard disk space
USB 2.0 is required

Software Requirements - Supported Operating Systems (PC)

- Windows XP Home / Professional / Media Center Edition, Service Pack 2 and 3 (32-Bit)
- Windows Vista Ultimate / Enterprise / Business / Home Premium / Home Basic Edition, Service       Pack 1 (32 & 64-Bit)
- Windows 7 Ultimate / Professional / Home Premium / Home Basic Edition (32 & 64-Bit)

Outlook: Supported Versions

- Microsoft Office Outlook 2000, XP, 2003, 2007 and 2010 (32-Bit)

Installation Instructions

1. Click Download below to download “HTCSyncv3.0.5579.exe” to your PC.
2. Double-click on the “HTCSyncv3.0.5579.exe” file to begin the installation.
   Note: Please close all running programs and temporarily exit your anti-virus program when you install HTC Sync™.
3. Once the installation is complete, connect the device to the PC via USB and on the device, select HTC Sync™ from the “Connect to PC” pop up or if the pop-up doesn’t appear, on the device, select Home > Menu > Settings > Connect to PC > Default connection type >
   HTC Sync.
4. The device will then start searching the PC for the HTC Sync™ software.
5. Once found, the Device Setup will open on the PC and guide you through the set up process.
6. Once the set up process is complete, your device will then be synced.
   Note: HTC Sync™ does not support wireless syncing; the device must be connected to the PC in order to be synced.

Procedure

Follow the instructions below to download and install the system update and necessary drivers.

Prerequisites

• Device has 25mb of User Data available
  • Click here for how to check available memory and tips to clear memory space
  • It is suggested that unused or large applications be removed, as necessary, to ensure at least 25mb of space is available for the software update process
• Battery should have a charge of at least 30%
• Task Manager or Task Killer applications installed on the device must be turned off and uninstalled to avoid them interfering with the update process
• A Windows-based PC with an active internet connection
  • The user must have administrator rights on the PC in order to install this software update
  • Windows XP SP2+, Windows Vista, or Windows 7 required
• The USB cable supplied with the device

Device is currently running software number 1.27.531.1 release-keys or 1.35.531.1 release-keys

• Software number can be checked by navigating to Settings > About phone > Software information and locating the Software number

Instructions

 ***NOTE:  Do not plug the device into the computer until instructed to***

1. Download both HTC_Sync_3.0.5511.exe and the system update below and save both files to the Desktop of your PC.
   
   • Files:      
   •   HTC_Sync_3.0.5511.exe
   •   T-Mobile_myTouch_3G_Slide_Software_Update_2.15.531.3.exe

    

2. On the desktop on your PC, locate downloaded file HTC_Sync_3.0.5511.exe, and double click on the icon to begin installation process. 
   • To view installation instructions for HTC_Sync_3.0.5511.exe, see HTC Sync installation instructions below
3. After completing the installation of HTC_Sync_3.0.5511.exe on your PC, ensure the myTouch 3G Slide is powered on and at the Home screen, then connect it to the computer using the supplied USB cable
   • If the HTC Sync wizard appears on the PC screen, simply dismiss the wizard by pressing the Cancel button
4. Locate the system update file on your Desktop named T-Mobile_myTouch_3G_Slide_Software_Update_2.15.531.3.exe and double click the icon to start the update
5. When the wizard appears, check the box and tap Next
6. Ensure you have completed the steps listed, check the box, then tap Next
   If you encounter Error 170, please refer to the Troubleshooting section at the end of this installation guide.
7. Confirm your software version is 1.27.531.1 or 1.35.531.1 then click Update
8. Confirm the updated version is 2.15.531.3 then tap Next
9. Confirm the update then tap Next
10. The device is now updating. Please be patient as this process can take up to 10 minutes.
11. The device is now updated! Tap Finish.

    Troubleshooting

    If the update fails with Error 170, take the following steps: 

    1. Dismiss the error message on the PC
    2. Unplug the device from the PC
    3. Take the battery cover off and remove the battery from the device
    4. Replace the battery and battery cover
    5. Power the unit back on
    6. Once the device is fully booted and at the Home screen, plug the device back into the PC
    7. On the device, drag the notification bar down from the top of the screen
    8. Tap on Select to change USB connection type and select HTC Sync then tap Done
    9. Locate the system update file on your Desktop named T-Mobile_myTouch_3G_Slide_Software_Update_2.15.531.3.exe and double click the icon to start the update
    10. Continue with the software upgrade process