We are using only Linux and no Odin and VirtualBox to update Galaxy S II to Android 4 alias Ice Cream Sandwich.
Heimdall 1.3.2 seems to be broken, so use heimdal < 1.3.2. More information
Install Heimdall
Heimdall Suite is an alternative to Odin for flashing in the download mode.
- Gentoo: add flow to the overlays and emerge heimdall
layman -a flow
emerge --autounmask-write heimdall
etc-update
emerge heimdall- For other distributions take a look at offical page of Heimdall Suite.
Get ICS and some other images
- Download the firmware, from Hotfile
- If you are going to root, download CF-Root
- or complete androidnext.de package via torrent
Flash it
Unpack the file “I9100XXLPQ_I9100OXALPQ_I9100XXLPQ_HOME.tar.md5”
Boot your phone to download mode
- Switch it off
- Connect via USB to PC
- Press and hold Home+Volume Down+Power until you see the “Warning” message
- Confirm it with Volume Up
Flash it with heimdall (do it with as root to avoid access problems to usb devices)
heimdall flash --primary-boot boot.bin --cache cache.img \
--factoryfs factoryfs.img --hidden hidden.img --modem modem.bin \
--param param.lfs --secondary-boot Sbl.bin --kernel zImage