Like others I did a manual update to 5.9.901. Today I tried to check for updates (no reason, just tried) and got the "Unable to check for updates at this time" message. This is the first time I checked since I installed .901.
Normally that only occures for me when I have no data, but when I do it says it's up to date. Not this time, in fact, the "Unable to check" message came up immediately, It didn't even try to check.
On a hunch, I powered down and removed the sim card. Then I powered back up without the card. Finally I powered down, replaced the card and powered up. This time I got the "Up To Date" message.
Did anyone else have that happen to them?