To use the best ICS, should I upgrade from XXKPK or what? And must I flash it via CWM 5.0.2.6?
Sorry, my English is not good
Yes ,you should flash it using CWM but it is better to upgrade ur CWM to 5.0.2.7 or 8.There nothing like that to upgrade form so and so.Just wait for Maclaw to release his beta 4 and flash it through CWM.
INSTRUCTIONS:-(I AM NOT RESPONSIBLE IF YOUR PHONE GETS BRICKED)
FIRST DOWNLOAD CyanogenMod 9.0.0-RC0-GT-S5570-GalaxyICS-KANG-beta4 ZIP AND GAPPS.
1) Place the zip files into your Sdcard.
2)Reboot your phone into CWM(clock work recovery mode)
PRESS POWER BUTTON+MENU BUTTON
3)Wipe your cashe,data,go to advanced and wipe Dalvik cache and battery stats.
4)Now go to install zip from sd
-choose zip from Sdcard
-then select the zip file
(CyanogenMod 9.0.0-RC0-GT-S5570-GalaxyICS-KANG-beta4) which you placed it in the sdcard.
5)It takes hardly 4 to 5 mins. now wipe cashe and data.
6)Flash the gapps zip .
7)Now restart your phone.
Note:-First boot takes much time (after installation)
DON'T FORGET TO PRESS THANKS BUTTON IF THIS HELPED YOU