iPad iOS 9 Activation error, iPad Pro 9.7

[FeliApple]

I was using an iPad Pro 9.7 on iOS 9.3.4 up until a few hours ago, when - while reading a newspaper in safari - it resprung out of the blue. You may remember that iOS 9 had a respring bug, it had already happened a few times to that iPad before, so I wasn't worried.
When it resprung, I was met with an activation error, telling me to either connect the iPad to iTunes and restore it, or contact support. I obviously do not want to restore it. Support was useless as usual and when I connected it to iTunes it told me that it couldn't be activated at this time. Support told me to DFU it to iOS 12, but I do not want to do that.
Please, any suggestions? Has anyone solved this without DFU restoring?

 

[AutomaticApple]

I was using an iPad Pro 9.7 on iOS 9.3.4 up until a few hours ago, when - while reading a newspaper in safari - it resprung out of the blue. You may remember that iOS 9 had a respring bug, it had already happened a few times to that iPad before, so I wasn't worried.
When it resprung, I was met with an activation error, telling me to either connect the iPad to iTunes and restore it, or contact support. I obviously do not want to restore it. Support was useless as usual and when I connected it to iTunes it told me that it couldn't be activated at this time. Support told me to DFU it to iOS 12, but I do not want to do that.
Please, any suggestions? Has anyone solved this without DFU restoring?

Are you able to update to iOS 9.3.5?

 

[retta283]

Are you able to update to iOS 9.3.5?

Not possible to upgrade to any firmware that is not signed by Apple, even if it's just a point update.