ASUS has been pretty busy it seems, because they have just pushed out another over the air update for the Transformer Prime tablet. This is actually the third OTA update for the Prime this month alone here in the US. I'm starting to wonder if they'll ever give us a change log. After the last update seemed to cause more problems than it fixed, we are hoping for something different with this latest update to build 18.104.22.168 so we'll see.
The update is very minor and should only take a few minutes. The only changes were to the build number and none were made to GPS or WiFi for those wondering. After the last update just last week many were complaining they had random reboots return, or those without reboots were now having the issue. My own Prime has only rebooted once the entire time I've owned it so while this problem is widespread, it doesn't affect everyone.
With ASUS pumping out 3 updates a month I'm starting to have mixed feelings. Yes updates in a fast and timely manor are great, especially OS upgrades like Ice Cream Sandwich. With updates as minor as these maybe they should do one big one, or at least give us a change log so we know what is being "improved". So far the only improvement I'm noticing is smoother scrolling and a weird screen glitch appears to be gone.
Hopefully this 3rd update finally fixes whatever random reboot issue they seem to be having. Or changes now they've released the bootloader unlock tool. As usual you can manually pull the update by menu > settings > about tablet > firmware updates. Most likely this will break root as always but you can run OTA Rootkeeper from the Market to save root -- works great on the last update.