downgrade u880 v11 to v10

[dr.lolo]

any solution to downgrad this fone to v10 by any tool or box ?:confused:
coz i cant unlock it with this vergin plz help !!!!!!:mad:

thanks in advance

[tuhingr]

Try with this file.
After downgrade unlock the phone.
http://www.4shared.com/file/112179666/276b9bda/U880-CODE-downgrade_v11v10.html