M600 Rom upgrade
Hi guys before I start, I have read numerous posts and tried to do as much reading before writing this, but my findings are not conclusive.
I have just got a new M600, so itís locked to Orange and has no rom alterations done.
I want to upgrade my rom as I donít like the Orange stuff in there anyway and I was very happy with a Qtek rom on my M500.
1 Do I need to sim unlock the phone, to rom upgrade?
2 Can I just upgrade using the files as in post http://forum.xda-developers.com/viewtopic.php?t=49298
3 Thereís talk of the CID being unlocked, does this need to be done, before upgrade.
4 There is no sure way of backing up existing rom?.
5 Once upgraded, is the phone still sim locked.
Basically I donít want a brick sitting on my desktop.