Can I upgrade my baseband from 05.16.05 to 06.15.00 without frying my radio so then I can downgrade it to 05.13.04 and finally I can be able to unlock it with ultrasn0w 1.2.7
Current version: 5.1.1
Production year: 2010
Please my iPhone is useless for more then 6 months, any help is appreciated . Thanks!