@pieterc
I tell you what I understood so far.
My firmware is 2.37. The scope works fine now, but has no special licenses.
I have tried several hours during several days to read this forum. It is not easy. It just make me the impression that I understood few things, but is not clear how shall I hack the scope to unlock all its features.
Even with 2.37 is hard with USB stick boot. My understanding is this: 2.37 can be hacked and I can have it in scope using USB stick method, if the scope was previous flashed with 2.35. But as it is now, flashed with 2.37 from factory,I definitely cannot do it only with USB stick method. I need the LAN card first.
In your case, with 2.39, is the same or even worse. You need the LAN card for sure.
It seems the best way for 2.37 and above is to upgrade to 2.41 and then to use the LAN card to unlock all the features. So, it makes no sense to search more for a method using USB stick only and having the scope with 2.39. Anyway, I will not try the USB method with 2.37. I will upgrade to 2.41 and then I will try the LAN card method suggested here in forum.
A new LAN card from Keysight is over 400€ because has this VGA output and because is the brand, the name. I hope everyone understands that at manufacturer factory site, somewhere in Taiwan, the same card costs at least 10 times less.
Then, the smart guys from here found an alternative, a cheap LAN card, no VGA, only few components and mostly tracks and it works for the purpose of communicating with the scope and unlock its features using telnet protocol. You may find here on forum some users that can sell you that cheap card at that low price of less than 10 times the LAN card from Keysight, which is a reasonable price when you think what you can do with it. There are also technical files, diagrams and Gerber files in case you want to make by yourself that cheap card.
I do not know what telnet software others use, I think I have read somewhere PuTTY mentioned (
http://www.putty.org/ ), but here is a list with such free software:
https://sourceforge.net/directory/terminals/telnet/os:windows/I used in the past for different purpose and I liked it the RealTerm.
Besides the telnet software you need some other programs around, just in case, as WinCE CAB Manager, because the scope has Windows CE as operating system. You may still need a USB stick around.
WinCE CAB Manager was discontinued by the manufacturer (OCP Software) but you can still find it on internet.
Maybe some alternatives work too, but not tried yet:
https://msdn.microsoft.com/en-us/library/aa448616.aspxhttp://www.mobilepackager.com/http://www.softpedia.com/get/Programming/Other-Programming-Files/Cab-O-Matic.shtmlhttp://www.hjgode.de/wp/2010/02/26/pocketpc-and-windowsce-essential-tools/A suggestion to help reading the forum: as it is now, you read on pages and sometimes the posts have links that makes you jump back and forth, but if you want a flat read with search within all the pages then you just go on Print at the bottom of the page and you “print” it as pdf file. Then you have the entire discussion on your PC for further readings as pdf and maybe it is even easier to follow and search, except the links which will point always online.
I did not try any hack up to now, but I ordered a cheap LAN card.