How exit "error 2001" after battery remplacement?

Hi,

Ive bought an "Iphone 4 remplacement battery kit" on ifixit,

Ive placed the new battery in the phone, but its show the itunes logo and when i try to restore the iphone, it shows the error 2001.

When i unplugg the iphone, he turn off immediately

But, when i try to put the old battery, the phone work well!

Does anyone have the same problem?

Otherwise i conclude the battery sell by ifixit don't work...

(sorry for my broken english)