First I have a unroot and unlocked galaxy s2 skyrocket, I tried several times upgrade my galaxy s2 skyrocket to ICS through Kies Software but every time I have the same issue.

After Kies says that there is a new firmware to my device and ask me if I want to upgrade, Kies starts to download and reach the 100% but after that nothing happens, the phone reconnect again to kies and say the same thing.

I run the software as admin, also use the Samsung usb cable, also reinstall Kies severeal times, I changed the usb port of my pc, the USB debuggin mode is always on, I dont know what else I can do about it, I'm thinking to install the official firmware through Odin but I'm not really sure to do because I read that their is some chips that has a problem with the eMMC and after check that I found that my cellphone is in risk because it has a KYL00m chip with 0x12 revision so I'm no sure what to do.