Instructions:
----For best battery life, flash with a 100% battery----
If you are flashing to ICS for the first time.
----You should be able to flash this on top of just about anything, but some people report flashing over CM7 works better---
1. Reboot into recovery using button combos.
2. Flash RC3.
3. Reboot into recovery, wipe data / factory reset.
4. Wipe cache.
5. (optional) flash new kernel
6. Reboot.
If you are upgrading from an earlier build.
1. Flash the newest build in CWM.
If you have rebooted and your phone will not go past the kernel screen
1. Boot into CWM and wipe data/factory reset and wipe cache partition.
2. Reflash the appropriate kernel.
3. Reboot.
If you have actually read and tried all these instructions and are still stuck
1. Join us in the IRC channel and ask for help. Please don't be stupid, try the above first.
Recomiendan en todos los casos hacer los wipes aunque no lo ponga en las instrucciones originales.