I know it's possible but i'm a little affraid to do it as you have to wipe and set the partition befor i can apply the update.
Just need to know for sure that i'm wiping and installing on the "blank" system instead of killing my 2.3.5 install...
The question ; how to do that ?
Are you trying to get both ICS and GB on the same phone?
When you log into recovery mode and choose reboot it will show : Reboot to system one/two (latest) for the version you last booted to.
Then you go into "update boot partition" and it will update the version that has latest too.
But you cant mix GB and ICS so you have to update both
I have a M1 C1 (CDMA version) and had to tweak some of the scripts in the Miuiandroid ICS version to get it to run on my machine.
Long story short, my phone is currently running 2.3.5v on System 1 and the latest Miui ICS version (2.5.18) on System 2. Even more strange, if I want to update the ICS version on System 2 it only works to run the update from the Updater in System 1.
I have no idea why this is the case, but it is the only way I have gotten the phone updates to work.