Firmware update

Hi,

I have Wyse 3010/T10 ThinOS client for RDP with firmware edition 8.0.037 that I am trying to update (formware) but I have no luck.

My research is telling me that I cannot make jump from 8.0.037 firmware to 8.5 firmware without making in-between steps.

Unfortunately the oldest firmware  that is available for the download on Dell web site is 8.5. Nothing older than that - like 8.4 or 8.3 etc - is available for download .

How can I download  firmware older than 8.5 so I can complete this project?