first of all i dont know if it's alowed to ask questions about repairing imei if it is forbiden the moderators can delete this tread.

I have a w810 CID49 and i have been playing alot with it like always with my phones and now it's up.
it seems that the imei is not right in the phone anymore is there any way to fix the problem?.

The problem is your GDFS, I think. The IMEI is stored in the OTP and the GDFS. If these two don't match your phone won't boot up.
Messing with the IMEI is illegal in most countries and Moderators/Admins here close such threads as soon as it comes to the point where the procedures to change the IMEI get described.
There are patches available, that disable the GDFS<->OTP IMEI check.

isn't imei change ILLEGAL ?

Yep, IMEI change is illegal, but from what i can see he actually screwed up his GDFS, so he's actually asking how to repair the GDFS, not the IMEI (after all IMEI can't be "repaired", it's just a number).

Now, about how to repair the GDFS i have no ideea, never "played" with it since i know i'ts dangerous if it gets corrupted.

have u tried flashing the phone????, imei is just a number in the opt and gdfs of the phone they must both match u need a service cable to change the imei in the gdfs the imei in the opt can't be changed.

Cant you get a free reperation with wotan?