Of course you can!
First, download this File
Program doesn't work on windows 2000/xp
1. Start IMEIWriter, go to Logger, connect to phone, it must be off. Click Read Phone and press the read button on the phone shortly while the program is scanning...
2. Enter old and new IMEI, click OK
3. Click Save Log and save it
4. Close IMEIWriter, open Siemens P35 IMEI Map Maker and go to IMEI Change. Then click Open Log, select your Log and click Save Map.
5. Close it and open IMEIWriter, go to Write IMEI, Open Map, select your Map and click Write IMEI.
You can change your IMEI by using IMEI Changer by Lead, but it locks your phone and you phone will become dead when you flash a newer version than 21
Greez Cryo