Strange; it seems that this is the ORIGINAL firmware for this device.... weird since the serial number dates to 2010. Maybe it's a refurb with a replaced main board?
Grainy pic, shot through rear grill:
I know these cheap little scopes don't get a lot of love around here, but for a basic scope I like it. MUCH quieter than my Keysight (no fan!), MUCH lighter, and reasonable capabilities for the price.
Beuford
Cool, that solves that question.
There must be tens of thousands of these still out there in Edu labs all over the world and while they're pretty basic by todays standards they still do basic tasks just fine and are a heap better than no scope !
I only ever had one and it was given to me by an EE with a dead backlight PSU oscillator, the C in the R-C push-pull primary had drifted from nF's into the pF's and stopped oscillating. That's all that was wrong with it but I had a better Tek at the time and it went to another home.
So if the display goes dead just shine a light on it to check if it's only the backlight and then check component values around the oscillator.