How to install old OS

[BertG]

I guess, your question might be answered already in this thread:

How can I downgrade the fairphone OS to an old version?

Hi, after installing OS 1.9.3 my fairphone is not working properly any more. One minute after powering up the phone freezes and the only thing I can basicaly do is pressing the power button and shutting it down. I have never experienced such problems with OS 1.8.1 so I want do restore that Version again. I tried to follow this tutorial on how to manually apply an update: But the problem is that the phone is telling me it won´t install an old version of the OS over a newer one. How can I do t…

Good luck.