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Sniffing the Rigol's internal I2C bus

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swperk:
Hello all,

Thanks to everyone for all of their hard work on this project. I find this all very fascinating!

I recently bought a DS2072A and used the rigup program along with the patched firmware to try to upgrade my scope to a fully optioned 300 MHz DS2302A (NS8H). Unfortunately, the key that was generated was rejected by the scope with the message "License is unavailable!". I regenerated the key a couple more times and carefully read it and re-read it to make sure I was inputting it correctly, but it never worked.

Undeterred, I then generated the key for a fully optioned 200 MHz DS2202A (NSEQ) and it worked fine. Has anyone else succesfully upgraded their "A" version scope all the way to 300 MHz? If so, how? I must be missing something...

Regards,
Stan

corax:

--- Quote from: swperk on February 08, 2014, 06:44:44 am ---Undeterred, I then generated the key for a fully optioned 200 MHz DS2202A (NSEQ) and it worked fine. Has anyone else succesfully upgraded their "A" version scope all the way to 300 MHz? If so, how? I must be missing something...

--- End quote ---

Yes, I have, as well as others.  I used the patched firmware to dump the keys, which I then put into a file with a hex editor, appending the ASCII serial number after the keys, and terminating the file with a zero.  Named this file ds2072a.bin.

Feeding this to rigup:

  ./rigup ds2072a ds2072a.bin

resulted in output of four possible license code combinations, for options NSEH, NSER, NSEQ, and NSFH.

But from the thread, it was found that NSFH wasn't the right code for 300MHz/all options; the correct code was NS8H.
So I edited the rigup source and recompiled it: change the NSFH code to NS8H on line 21 of luxury.c.

Rerunning rigup produced a license code for NS8H that worked for me.
(This was done in Linux.)

pascal_sweden:
Does this hack work now on a DS2072A without opening up your actual scope?
300 MHz and all options? Actual tests to verify stability and BW limit?

SPRX:
Great work by the team working on this thread . . !!

It is time to upgrade my DS1102, and this thread is encouraging.

I may convince my pocket for DS4014 over DS2072A if it is really a good investment. I know the price of DS4014 is more than double + in import-duty bracket.

Could you please let me know if the DS4014 is upgradable successfully to 500MHz with options, if you have done an upgrade on DS4K.


madcrow:
I just don't get it... Some of you (e.g. at2 and crmaris) were able to install the 300MHz (NS8H) option without difficulty. However corax and swperk only managed it by modifying the rigup source files.
How is this possible? Are there multiple paths you can take with the rigup tool to obtain the serial?

@tirulerbach
Is there any chance you could compile a rigup v0.2 which uses the recently discovered NS8H option instead of NSFH? I think a lot of people would be very grateful :)

And one more question: Do I understand correctly that the same code (NS8H) can used for all the models (2072A ...2202A) to unlock all options?

Thanks!

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