Android system not updating?

[AC Question]

Ok, whenever I try to open "messages" instead of opening it it'd just show "Android system updating now. Please, try again later." (This happens with everything else including settings).
this has been happening for 2 days now and I don't know what to do about it.

 

[B. Diddy]

Welcome to Android Central! Which phone?

 

[Fishie-dishie]

Welcome to Android Central! Which phone?

Samsung galaxy ace

 

[B. Diddy]

Try booting into Recovery Mode and wiping the cache partition, which won't erase any personal data. Follow the steps in this video, but instead of selecting Wipe Data/Factory Reset, make sure you select Wipe Cache Partition. When complete, then select Reboot System Now.

https://www.youtube.com/watch?v=HIGu037g77g