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You can downgrade using tools like Semaphorin or SEO 4N , but the device will be "tethered". This means if the phone dies or reboots, you must connect it to a computer to boot it up again. iOS 10.3.3 Alternative (No Blobs): The
Disable Find My iPhone: This prevents Activation Lock issues during the restore. Downgrade Iphone 5s To Ios 7
| Method | iOS 7 Achieved? | Untethered? | SEP/Touch ID Working? | Difficulty | |--------|----------------|-------------|----------------------|------------| | iTunes Restore | No | N/A | N/A | Easy | | LeetDown (10.3.3) | No (10.3.3) | Yes | Yes | Moderate | | Tethered downgrade w/ blobs | Yes | No | No | Expert | | Dual-boot | Yes (partial) | No | No | Expert | You can downgrade using tools like Semaphorin or
If you are lucky, you can use a tool called or similar jailbreak utilities to dump the APTicket or SHSH blobs from the device if the device was previously on iOS 7. If the phone has never been on iOS 7, or the blobs are corrupted, you cannot proceed. | Method | iOS 7 Achieved
Since iOS 10.3.3 is OTA-signed, you can downgrade untethered using (macOS) or iOS-OTA-Downgrader (Linux/Mac):
A safer alternative is to keep your main OS (e.g., iOS 12) and use CoolBooter