To those concerned about safety issues of the ICS kernels, this is my opinion
1. DO NOT wipe any data from its default recovery ( whether is lpy, lpf, lp9, lp5, lp6 )
2. If you wish to flash another rom, flash Abyss Kernel 4.2 and use its recovery to wipe data, caches and flash any zip rom you need
3. Do not even attempt to do factory reset from settings of phone
4. DO NOT attempt to flash latest Msian ICS roms thro KIES if you are not on original official Msian stock rom ( rooted is still OK ). One user here has his emmc partitions fried trying to update from a Taiwan ICS rom ( i think) and got stuck. He tried to reflash it using Odin in PC and got the feared factoryfs uncomplete and phone hang. This is what the seasoned XDAers called superbrick and their recommendation is to change motherboard !!!
Follow these and I am sure you will be safe. Of course there will still be several doubting Thomas who even advise you don't even bother to use ICS roms
If you want to use ICS, use it smartly
yeap you are right.. from taiwan to malaysian rom.