^ What everyone else said.
For the time being, use NUSAD to get the patched IOS70 v54321, and install it.
But this will only protect you from the error 003 in sysmenu 4.2. Future updates will most likely bring it back. The easiest way to make it update-safe is just not to update.
If a newer update does come out, you should wait for people to hack it first, then install the hacked version as per the hackers' instructions.