Sorry noel, no manual online that I could find. I do have a hard copy if there is something you want to know about I will be happy to look it up for you.
I finally found an image for the WM8650 7" Android tablet (non 3G) that makes the tablet rock! Installation is super easy but does wipe the device. Backup any data you want to keep. You will also need an SD card you can format. The difference in loading this ROM is night and day. No more strange Chinese apps, no more lockups or unexplained reboots and access to the real Android Market directly on the PC. Any apps I paid for on my Android Phone were available for download to the tablet now too!
Download Uberoid ROM.
Download SD Formatter and install it on a Windows PC.
SD Formatter 3.0 for SD/SDHC/SDXC - SD Association
Connect the SD card to your computer and use the SD formatter to create an empty FAT32 volume.
Unzip the Uberoid download to an empty folder on your PC first, then copy the files onto the SD card. (for some reason extraction directly to the SD card failed on me)
The wmt_scriptcmd file and FirmwareInstall folder should be on the root of the card.
With the android tablet turned off, insert the SD card, and turn it back on.
During startup the android tablet will read the SD card and install the firmware. It took about 4 minutes for the process to complete before the device rebooted into the new OS. Watch the screen because the SD card must be ejected when the firmware installation completes or the upgrade will run again after the device restarts.
After installation I went into the applications list and found an app for fixing the market. I was then able to go into the regular Android Market after setting up my WiFi connection. I found it necessary to search for GMail in the market to update the version contained in the ROM image. After doing that I was able to access GMail on the tablet.
Everything else I did was related to setting up the environment the way I like such as using ADW Launcher as my default launcher. Moving icons around etc.
* Note that there is a large clock widget on the home screen that will prevent you from putting icons on the desktop, I removed that.
Overall this improved the device 1000%. I was really disappointed in the tablet and now I am extremely happy with it.
Clarification: Others have been reporting that they have tried the information I have posted, some with success and others without success. Make sure your loading the right ROM for your device. The Tech Know web site has many ROMs to try. My device has a blue LED, WiFi Only and is 7 inches. If your device does not fit that description, you can still follow my upgrade instructions but you need a different ROM.