[orangekid]

If it is an official update for your phone, it will not brick it no matter what current ROM or hack your phone has.

but it will erase all your data and basically take it back to "stock".

it sounds like someone flashed HSPL (unlocked) and then flashed an English ROM on the phone.

install whatever games/apps you want to, and don't worry about bricking your phone unless you flash the wrong radio or ROM. Any updates to apps or anything like that won't harm your phone at all.

The only way you are going to brick the phone is flashing a custom radio or custom ROM that is for the wrong device or GSM on CDMA (or vice versa)