The program may get stuck before/after iBSS/iBEC/PongoOS transmission.

• This may be due to USB connection issues. Restart if it happens.

Restoring to iOS 10 may result in your device getting stuck in recovery mode.

• Until a future update fixes the issue, restore to iOS 10.3.3 first before downgrading to your target version.

Restoring to a version that is too old using pre-installed blobs may fail.

• Perform a tethered downgrade first, then retry the untethered downgrade.

Restoring any device using pre-installed blobs from factory may not restore baseband correctly.

• Baseband features & activation may not work.

• Tethered restores may work fine.

For devices with a baseband chip, if Found non-customer FDR hashes. pops up during a restore, it's almost certain you'll have baseband issues.

• There is no fix for now.

• Workarounds might be developed in the future.

A9 SEP exploit (shcblock method) can sometimes fail.

Some A9 devices on iOS 9 cannot be activated. Complain to Apple.

iOS 10 & 11 may fail to boot when restoring or tether booting, getting stuck on "recfg done".

• Solution: Force reboot and try again. In case your device panics instead of hanging, report the issue.

The latest baseband firmware for iPhone 7 Global (iPhone9,1 and iPhone9,2) & iPad Pro (A10X) Cellular is not compatible with iOS 10.

• No cellular features, activation may not be possible. YMMV.