Problems with recent update.

[bwinc1]

my iPhone 3GS won't stay on after I updated to 4.3.5 . It flashes on and off like a strobe light. It will sometime be doing that when it is just sitting there not being used too.

 

[iCrank]

my iPhone 3GS won't stay on after I updated to 4.3.5 . It flashes on and off like a strobe light. It will sometime be doing that when it is just sitting there not being used too.

Have you ever experienced water damage?

 

[Gregoris]

try restoring it again, it could be that there was a problem during installation