GS1920-24HP - Firmware Upgrade Issues.

I tried to add a comment to the below thread as it was very similar to mone but could not so I have had to create a new post, apologies.

I have renamed the new firmware file 480ABMI1C0.bin to ras-1 and tried to use ftp and WinSCP to transfer them over to the switch.

Via FTP, I get the error "-10 File Size Too Large"

Using WinSCP, first I tried uploading the file and I get "Received SSH"_MSG_Channel_DATA for nonexistant channel 0"

Then I tried deleting ras-1 directly from the switch using WinSCP and I get "The server does not support the operation"

Doing a bit of research it all points to the switch not having enough free space on it, though I may be wrong.

Any help would be appreciated, thank you. Screenshots attached. Adrian.