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Sniffing the Rigol's internal I2C bus

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AintBigAintClever:
My keys were successfully applied using Ultra Sigma in Win7 64-bit, sounds like you had an issue with either drivers or the Ultra Sigma install. Well done getting it done anyway.  :)

trunc71:
That's what I first thought because I know that many people have successfully used W7 64-bit. But others didn't. In my case Ultra Sigma was able to communicate with the DOS and has read out the keys correctly with the *IDN? command. This worked for both 32- and 64-bit without problems. The :SYSTem:OPTion:INSTall command only worked on 32-bit for me. I don't know whether this is due to a driver problem but I do think that this is some kind of a communication problem that arises under not yet known circumstances.

Alex_Ismagilov:
Hi all,
I'm very happy :) about upgrading my DS2202A-S to DS2302A-S+AllOptions.
Greetings from Russia

Greatest THANKS for guys who make it possible!

Some details:
Used this guide: http://gotroot.ca/rigol/D2072A%20Unlocking%20Guide.pdf
The wizard "DS2000A Upgrade Utility" - does not work. Can't see after flashing fw.

My device: DS2202A-S
Now DS2302A-S with all options :)

Serial: DS2E15xxxxxx
Software version: 00.02.01.00.03
Hardware version: 1.2.2.0.2

Thanks: https://www.eevblog.com/forum/testgear/sniffing-the-rigol's-internal-i2c-bus/msg409142/#msg409142
NSFH - ???? all option and NO CHANGE bandwidth :(
NS8Q - ???? all option and 300mhz

Alex.

sethur:
Hi *,

I got an DS1074Z-S, but non of the generated keys worked for me.  :-\

Unfortunately Rigol added a 12h timer when several wrong keys have been entered. :(

I then ripped up the case and read out the W25X40B flash, tried another wrong key and re-read the flash again to find out where the 12h timer is located.
It seems to be a 32bit timer at location 0x78007.

The trail keys start at 0x78027.
Removing them from flash and reentering would give another trail period, I think...

Maybe someone out there has some interest and knowledge on hacking this?

Greets,
sethur



PepeK:
Do I understand it properly that if DS 2072 A or MSO 2072 A has a hardware version 2.2 it is not possible to downgrade using an USB stick ? (and it works only for HW revision 2.0 ? )
Is the only working way opening the scope and dumping a memory with some JTAG tool as described in this forum ?

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