I have "T28 unlock cable", which is not supported in the newest version of DavinciTeam client- so I downloaded bit older version, which has support for that cable. I installed it, changed the "Port Settings" under the Settings to COM1(I used "Check Ports" command; later I tried with COM3 port), and ran the "Read CID/Test Cable". When the phone was turned OFF, nothing happened- I waited about ten minutes. When I turned the phone ON and tried, it always found the phone, but the model was unknown(and it always gave me different code, like 9C 44 14 00 14 88 0C 88 or 00 D0 DE CC 9C D4 F4 CC etc). Then I removed SIM and memory card, but still no help. Error code is 0x000120. As I use T28 serial cable, I do not need any drivers as far as I know. I have removed battery several times etc, but nothing seems to help. I have this cable: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...em=150109181517

Few error logs:
phone ON:
--------------------------------------------
--------------15.11.2007 4:14:00--------------
Client Version 18.4 - CID52 supported!
**** READING CID STARTED ****
Searching phone on port COM1...
Port opened OK!
Phone Attached!
Unknown model:
9C 44 14 00 14 88 0C 88
Execution Time - 00:01:18
Error: 0x000120

--------------------------------------------
--------------15.11.2007 4:17:23--------------
Client Version 18.4 - CID52 supported!
**** READING CID STARTED ****
Searching phone on port COM1...
Port opened OK!
Phone Attached!
Unknown model:
00 D0 DE CC 9C D4 F4 CC
Execution Time - 00:00:12
Error: 0x000120

--------------------------------------------
--------------15.11.2007 4:34:48--------------
Client Version 18.4 - CID52 supported!
**** READING CID STARTED ****
Searching phone on port COM3...
Port opened OK!
Phone Attached!
Unknown model:
FE 08 14 D0 88 80 3C 80
Execution Time - 00:00:51
Error: 0x000120

phone OFF:
--------------------------------------------
--------------15.11.2007 4:33:44--------------
Client Version 18.4 - CID52 supported!
**** READING CID STARTED ****
Searching phone on port COM3...
Port opened OK!
Execution Time - 00:06:52
Stopped! //this Stopped is because I clicked Stop after waiting and ensuring, that nothing is going to happen

What can be wrong? Regardless, should I use some drivers?

Mind telling us what phone you're trying to find the CID of?

sorry, it is Sony Ericsson Z800i Firmware is R1Y005, phone is not modified.

Hehe, well I have a dead Z800 from playing with it, so yeah, I'll be of no help here

just looking your phones CID turned your phone into a brick?

PS. in meanwhile I would try some other software to get the CID of my phone, but I do not know any. Any suggestions?