Products > Test Equipment
Sniffing the Rigol's internal I2C bus
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Gunb:

--- Quote from: hammy on January 13, 2014, 02:48:41 pm ---
--- Quote from: Gunb on January 13, 2014, 02:22:02 pm ---Hi Gary,
short question, didn't follow the thread for a while: why do you need to downgrade? Don't the keys work for V. 01.08.00 anymore?
Kind regards
Gunb

--- End quote ---

He wrote it five messages before. See Reply #2463.

--- End quote ---

OK, thx!

Hmm, slowly this thread seems to need a TOC  ;D
NikWing:
does the new secret A-version keygen need dumps or will it work without? :o
granz:
Here are some pictures of the internals of my DS2072A, including images of the input stage under the RF shield, for those interested.

My version info is:

Serial: DS2D....
Hardware version: 1.0.2.0.2
FPGA version:
    SPU: 03.01.09
    WPU: 00.07.01
    CCU: 12.29.00
    MCU: 02.13

Also, I can confirm that tirulerbach's keygen works nicely (scope now thinks it is a DS2202A  :-+).  I'll try to take some bandwidth measurements hopefully soon and report back...

Hopefully the image names make sense (feel free to ask for clarification).  Some of the close-ups are low resolution unfortunately, because I could only get a cheap USB microscope in there without further disassembly.

Another thing I thought of that tirulerbach mentioned about the JTAG connection: You shouldn't need the pull-ups at all as long as your adapter is driving the nTRST and nSRST lines high (my FT2232H-based adapter does that, and I assume almost all would).  If you use the pull-ups you don't need to connect those lines to your adapter at all--just leave them pulled-high for the mem dump.

Hope the images are useful !

(full back image, jumper image, and one input stage image attached, all in .zip)

https://mega.co.nz/#!I89GxaqI!bTPeSVsWpN8jEXoa44ejMDz3aOM5A-zmMqczeo_31c8

dr.diesel:
Keygen worked great for unlocking all decode options on the new MSO4000s.

Thanks again to all involved.
whotopia:
Hi all,
With all the JTAG memory image mining going on has anyone figured out where the serial number is stored in the DS2xxx?  I rolled back my firmware and the serial number was reset to default.  Anyone have any ideas on how to 'fix' this?  Also, has anyone determined if the firmware allows for the serial number to be changed via uploading a file like on the DG4000? 
My JTAG adaptor is in the mail.  I hope to help out soon.
Thanks!
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