The 30-pin connector must be high quality; cheap cables often fail during firmware writes. The Verdict
Apple still signs the OTA (Over-the-Air) manifest for iOS 6.1.3 for the 4S, making it one of the few devices that can be officially downgraded without "blobs." proshivki aifon 4s skachat
Many enthusiasts choose to "skachat" (download) iOS 6.1.3. This is widely considered the best firmware for the 4S because of its skeuomorphic design and lightning-fast speed. The 30-pin connector must be high quality; cheap
For most users, the journey ends at . This was a special maintenance release issued years after the 4S was discontinued to fix a GPS rollover bug. Performance: It is heavy for the A5 chip. For most users, the journey ends at
When looking for IPSW files (the format for iPhone firmware), reliability is key to avoid malware or corrupted files. 1. Official Repositories
Red entries are "Unsigned" (requires special tools like Legacy-iOS-Kit). 2. Custom Firmware & Jailbreaking