★ As of September 2020. Due to Apple’s policy, iOS cannot be downgrade.
If you accidentally upgrade from your contracted iOS-only license. ⇒We recommend that you prepare an iPad with the same iOS version as the contract and transfer the license to it. This is the easiest way. However, license reissue fees and reconfiguration are required.
Alternatively, you need to sign a new license agreement. Please contact your dealer for this.