ALU - CE firmware help.

In Oct 2024 I bought an ALU HD - CE from The Brick in Canada. This was just on the cusp of the new SAM Club CE revamp and there was very little information in Canada on what was happening revamp wise for info. I place an order at The Brick and was assured it was in stock - hoping to get the then current 5.70 FW because there was reports of OneSauce no longer working on the CE machines and people having to downgrade etc. After a small shipping delay my new ALU-HD shows up and guess what "Thank you SAM's club customer message".....I was given a ALU HD- CE. So I dropped it to 5.68 and brought it up to 5.70 via OTA update and was in happy OneSauce heaven. Now many moons later OneSauce in running on stock CE firmware and I want to reverse the downgrade to run the latest OS the machine came with. Overall I thought CE was faster and I want the latest and greatest. However - two tickets and 25 messages later I'm still stuck convincing ATGames that the ALU even HAS a new OS and 5.70 with old UI not the latest version available. After the downgrade there is no "reset to factory" and the one firmware they gave me was the old UI. Anyone got any ideas - or an image of OOTB firmware. They keep saying the pictures I send them of ALU HD - CE screens is COINOPX and not supported.....I keep telling them I never even tried coinopx? What am I missing here? Is there an FW image I can be pointed to that will get me CE again?