Tweaked iOS 5.0.1 (9A406) Fixes “Invalid SIM”, “No SIM Card Installed” Errors On iPhone 4S

Apple surprised us by quietly releasing a tweaked version of iOS 5.0.1 for iPhone 4S users. Though the build number (build number of original iOS 5.0.1 was 9A405) suggested that Apple may have fixed some minor bugs, the details were not … Continue reading →