QUOTE(mcsj @ Jun 2 2012, 03:18 PM)
Mmm, I am still using the B865 that comes with the phone. Frankly I was really tempted to upgrade to a later version but hold off the decision. I glad I did that because later on I was alot of complaint here and there regarding the newer rom version. My phone is still non-rooted. I don't want to void my 2 years warranty yet. I also read different rooting option for few different rom version. I was also tempted to do it but hold myself against it. If you are game enough to experiment, by all means go head

Mine is also factory default version. But this still makes me wondering, that why GB have different build versions? What this build version shows? The country based settings? Or something else?
However using Settings > About Phone > Online upgrade, no soft-, or firmware update are available. Also www.huaweidevice.com > support > 8860 search, shows only:
HUAWEI_U8860 ICS 4.0 Cambodia Demo version
2012-04-01 Downloads 258.11MB
open source-kernel-3.0.8-U8860-IcecreamSandwich
2012-02-13 Downloads 117.78MB
HUAWEI_U8860_Android_2.3_V100R001C00B866SP01_Normal
So I wondering what new ROM's are users here talking about?
And about warranty, I understood, that after rooting is possible also restore phone to the factory status, if yes, then warranty is still active. And usually no software issues are covered with warranty, so I think warranty is for hardware only, so this root & warranty issue is very strange.