Phone has 2 ESN's...Activation problems!

[ModmyPPC]

Ok here is the deal.

The the phone has two esn's. THe one on the back of the phone underneath the battery is a clean esn. The one inside the phone belongs to someone on a different account and she (sprint used she thats how i know its a girl) has her phone activated on her account with no problems.

They can't use the clean esn on the back of the phone to get the msl because the msl to unlock the phone belongs to the girls account. We can't go into the settins and remove her esn and put mine in.

If we try using esn from the back of the phone to get the msl the msl wont unlock the phone.

I have to bring it to a coperate store tomorrow morning. The sprint tech said that they may be able to completly wipe the phone and the esn should return to the one on the back of the phone.

If the coperate store can't do it, is it possible for me to change the esn of the phone to the esn thats on the back of the phone. Im not trying to do anything illegal. The phone is clean the esn is clean, it belongs to me However its just recognizing her esn instead of the one that belongs to the phone.

I flashed the swiss cheese rom if I odin back to stock will coperate know that I rooted the phone?

I dont want to return the phone becuase I got a really great deal. 180$ and its in mint condition. but the seller offered a full return.