Hi, thanks for your reply.
I should have stated, it came with 5.09.01.05 and I downloaded and installed 5.09.01.07 from Siglent at:
https://www.siglenteu.com/download/9233/And I made a comparison at:
https://siglentna.com/download/17221/This was, in both cases, a zip file containing only 2 pdf instruction files and SHS800_5.09.01.07.ADS file.
No .cfg file.
The pdf instruction files made no mention of a .cfg file, either.
Basically, the instructions were to put the .ADS file onto a USB stick and plug it in....
Go into the menu to "Update Firmware"
Select the .ADS file in the file browser type window.
It displayed a green progress bar.
The installation appeared to work.
It now reports the new firmware in "System Status"
The device had a white splashscreen when I received it.
It still has a white splashscreen after the firmware update.
The device appears to function quite happily in all other regards.