Easy method to downgrade to previous version of the firmware

My Cloud OS 3 Personal & Network Attached Storage My Cloud
86

Hi guys,

its very good you write that old firmware is OK, I want it too, but I have problem by downgrade. The problem is that MyCloud always notices “Device does not have enough space for upgrade.” I tried it update from file from my PC and MyCloud public share folder too, but no one works. I rebooted many times. Do you have any ideas how to solve this?

Thanks for your help!