Originally Posted by jsgraphicart
So if MIUI is saying that it is running Android 4.0.3, and CM7 is Android 2.3.7, then is it not ok to nandroid back to CM7 from MIUI?
No, it should be fine. 4.0.3 is STILL using the same kernel. 4.0.3 is the OS version, not necessarily the kernel version.
Since the bootloader is still locked, flashing the DX2 MIUI still keeps the 2.3.4 kernel. All that gets replaced are the system files. So, nandroiding back to CM7 (which is what I did) is fine because you are still running the same kernel.
At least, that's how I read it when I researched a little on this and with some other people posting their explanations as well.
The reason you shouldn't flash 2.3.4-based ROMs over 2.3.5 is because the kernel version was changed. Remember, the kernel can ONLY be updated via a Verizon-approved OTA. The 2.3.5 update is not an official release, but it DID come from Motorola servers, so it has the signature in it that the X2 is looking for when the kernel is attempted to be upgraded. Hence, that is why flashing a 2.3.4-based ROM over a 2.3.5 image is not a good thing. Same goes with flashing a 2.3.5 ROM over a 2.3.4 image. It's just not a good idea and could pose problems down the road.
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