CID - lock status, some basic questions...

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Hello! Recently (3 days ago) I've 'midgraded' from BlueAngel to Prophet... THus I have some newb. questions

How to check whether my Prophet has a CID-lock? The Wiki has no "FAQ" section...

Another thing - flashing. There is nowhere explained in the Prophet section how to upgrade a G4 ROM. My PDA has AKU 2.0, which really pi**es me off, 'cause I've been using BlueAngel with AKU 3.5 for a while... 2.0 boots a HELL long, does some strange things I do not understand :/
As far as I understand, to upgrade my Prophet ROM I need a G4 ROM with compatible CID (unless my PDA has no CID-lock, but I do not know how to test this...). How and where from can I get the correct ROM? My bootscreen details:
IPL 2.09.0001
SPL 2.15.0001
OS 2.15.13.27
GSM 2.19.21

Ahm ... you dont need to unlook your G4, to Upgrade the OS with Smart1 or other Firmware ;)

I have a locked G4 and all Firmwares work if you upgrade without IPL/SPL!!!

Look -> http://forum.xda-developers.com/showthread.php?t=294981