bluetooth problem after updating to the new software version (6.1.1.B.1.54)

[nexusone]

After the software update, the device will not pair with Bluetooth Zebra portable printers, whereas the previous version of the software was all fine. Is there any solution for this or can someone explain to me how to put an older version of the software without having to lose my warranty? The important thing is that as soon correct the problem, thanks in advance and sorry for my english!

EDIT: Or where I can download a version for 6.0.B.3.184 for SI No. 1266-3043

[Johan]

I'm sorry to hear. If you wish to downgrade the phone software I suggest that you contact your local support team for more information.

http://www.sonymobile.com/global-en/support/contact-us/contact-info/