How to Doctor an HP TouchPad (reflash the ROM)
On your Touchpad be sure to have:
USB cable. The battery is charged to at least 30%.
Windows 7, Windows XP, Windows Vista Available USB port (not a hub or secondary port). Java 1.5 or later is installed. If you are not sure about what version of Java you have, or even if Java is installed, go to java.com: Java + You and click the Do I have Java? link to install the latest version of Java. 210MB of storage space. Internet connection.
The update process will take approximately 15 minutes. During this process, your device will not be available for use.
Downloading webOS Doctor
Download webOS Doctor on your desktop computer. If you have a webOS profile, get it from http://ws.hpwebos.com/webosdoctor/sorry.htm
If not, check the webOS Internals page: WebOS Doctor Versions - WebOS Internals
Get your TouchPad ready to update
Hold the Power Button for several seconds until a menu appears. Tap Shut Down to completely power down your device.
Running webOS Doctor
Connecting your device and finishing the webOS Doctor update
Connect your device to your computer using the USB cable. You must connect your device directly to your computer, not through a USB hub or other intermediate device. Now the tricky part. Hold the Volume Up button on the device and insert the USB cable. After the large USB symbol appears on screen, let go of the Volume Up button. If you see the HP logo instead of the large USB symbol, you may have let go of the Volume Up button prematurely. If this occurred , wait until your device boots up, shut down your device and then repeat step 2. Windows will find your device and may offer to install two different drivers. When asked to install drivers of OMAP, select No, not at this time. When asked to install drivers for Palm Novacom (bootie), select Yes and let the drivers install. This may take a while. Once the drivers have been installed, the Next button will become available in webOS Doctor. Click Next. Do not disconnect your device from the computer during the update process. When the Reset Complete screen appears, click Done. Wait a few minutes for your device to reset. You're done!