@tv84 What is the "easy" way you mention? I have read too much in this thread to remember!
You have to re-read the whole thread but, now, "read between the lines"...
I'll help a bit: read only the last 10 pages.
I did again. I'm not sure if it's too subtle or if I read it and not figured that was it. I know licenses are stored in FRAM, and it's probable a replay attack could be done on the trial licenses (anybody tried?!?). Cloning a scope is another possibility. Or doing something in the bootloader. But after reading 150+ pages on this forum about the Rigol MSO5k and the 121GW, I'll take a break, reading about the Siglent "easy way" will wait. Besides, I have no need to hack, it's pure curiosity. That SSH hack is calling me, but I resist ;-)
And I agree that Rigol probably doesn't believe it would be a good return on investment to lock them better. The firmware updates aren't even signed! That's an invitation to create some custom software for them. Botnet, anyone?
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif)
We already know it runs Doom...
73,
Martin VE2MRX