hi, have not followed this thread for long. I need advice from kind nexus-ians here and this topic may have been discussed before but too many threads/discussions on Nexus 7 here and i know where to search.

I have three Nexus 7 wifi 16gb at home, for my 3 kids. One is US spec the other two are local specs.

There was a 4.2.1 firmware update pushed to the US Nexus and I installed it couple of months back. AFter the update, some of my downloaded Apps went haywire and the processing time has gone tremedously slow, including the boot up time. The other two Nexus 7 are still running on 4.2 and the boot up time is very fast and all the apps are running normal.

What should I do, re-set the firmware back to 4.2 or was there any patch being released to fix the 4.2.1 that I am not aware of? Hope some kind soul can help here. Thanks in advance.

thanks. Just to clarify, i just "re-set" back to factory default and then re-install 4.2.1? where to download the 4.2.1 update? the last time it was push to me. Strangely, the other two local sets nexus 7 is still on 4.2 and no firmware update was pushed to the sets.

not much improvement, and after booting, a pop up said "Process system isn't responding, do you want to close it".

After I click OK, i can continue to run the apps.

Is there anyway I can revert back to 4.2? My other two Nexus 7 are still running on 4.2, it operates seamlessly so far.