Products > Test Equipment
Sniffing the Rigol's internal I2C bus
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f1rmb:
Hi,


--- Quote from: navzptc on June 20, 2014, 02:40:14 pm ---I think that maybe Rigol is restricting the updateability of their units which have just been built, even though the firmware version maybe the same as earlier units.

I could update my DS2202A with  'All Options', but not the 300Mhz bandwidth; also with my recent DG4102 - I could expand it to 160Mhz but not to 200Mhz that a lot of people have  :(

Make the most of what we can achieve now - I feel it will get more difficult in time!

--- End quote ---

Yesterday I received my DS2072A, and I didn't experienced any problems while "updating". Now I have a full featured, plus 300MHz.

BTW, many thanks to everyone involved in this hack, at any level (also thumbs up to reviewers, that was helpful to make my choice between all available "low cost" DSOs).


Cheers.
Purevector:

--- Quote from: navzptc on June 20, 2014, 02:40:14 pm ---I think that maybe Rigol is restricting the updateability of their units which have just been built, even though the firmware version maybe the same as earlier units.

I could update my DS2202A with  'All Options', but not the 300Mhz bandwidth; also with my recent DG4102 - I could expand it to 160Mhz but not to 200Mhz that a lot of people have  :(

Make the most of what we can achieve now - I feel it will get more difficult in time!

--- End quote ---

This is possible.  I just got a new DS2072A from TEquipment from their newest shipment from China.  Using the very easy-to-use Upgrade Utility I was able to unlock all option and 200MHz bandwidth, but not 300MHz.  This is not an user error issue.  Something is certainly going on here.  Maybe some models have been flagged somehow that their front end is not capable of 300MHz (components not to spec)?
marmad:

--- Quote from: Purevector on June 21, 2014, 03:20:57 pm ---
--- Quote from: navzptc on June 20, 2014, 02:40:14 pm ---I think that maybe Rigol is restricting the updateability of their units which have just been built, even though the firmware version maybe the same as earlier units.

I could update my DS2202A with  'All Options', but not the 300Mhz bandwidth; also with my recent DG4102 - I could expand it to 160Mhz but not to 200Mhz that a lot of people have  :(

Make the most of what we can achieve now - I feel it will get more difficult in time!

--- End quote ---

This is possible.  I just got a new DS2072A from TEquipment from their newest shipment from China.  Using the very easy-to-use Upgrade Utility I was able to unlock all option and 200MHz bandwidth, but not 300MHz.  This is not an user error issue.  Something is certainly going on here.  Maybe some models have been flagged somehow that their front end is not capable of 300MHz (components not to spec)?

--- End quote ---

I'm not sure how they would accomplish this unless the firmware was changed. Which version are you each using - v.2 or v.3?
Purevector:

--- Quote from: marmad on June 21, 2014, 03:41:50 pm ---I'm not sure how they would accomplish this unless the firmware was changed. Which version are you each using - v.2 or v.3?

--- End quote ---

My unit came with 2.0.1.  Used the utility to upload hacked firmware to grab keys and update.  300MHz did not work, but 200 did.  Upgraded to 3.0.1 and tried again, same result (of course using key dump from hacked firmware).
marmad:

--- Quote from: Purevector on June 21, 2014, 03:49:34 pm ---
--- Quote from: marmad on June 21, 2014, 03:41:50 pm ---I'm not sure how they would accomplish this unless the firmware was changed. Which version are you each using - v.2 or v.3?

--- End quote ---

My unit came with 2.0.1.  Used the utility to upload hacked firmware to grab keys and update.  300MHz did not work, but 200 did.  Upgraded to 3.0.1 and tried again, same result (of course using key dump from hacked firmware).

--- End quote ---

Strange. Then I imagine it might just be a side-effect of the way the keys are generated in lots for the 2000A series. I doubt very much that it's anything specifically intentional by Rigol since, AFAIK, they don't even sell BW upgrades - so if they were going to try to quash illicit BW upgrades, why not all of them?

If it's FW checking a new hardware revision of the board, then they had to code it quite some time ago into the FW since we've been on FW v.2 since last December or January.
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