| Products > Test Equipment |
| Sniffing the Rigol's internal I2C bus |
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| Asmyldof:
Well, it is absolutely certain that the keys are of the same format, we know that, we also know that the options are kept between upgrades, so that seriously limits the changes they could have made. 90/10 likelihood they only changed the parameters to the key system and not the actual key system itself. I did see a topic chain a while ago about someone making a PIC add-on (I think it was PIC) on the I2C to the FRAM that kept resetting the time-out on the trial options, as an alternative to making the entire FRAM write protected. I'm thinking of applying that until I manage to re-hack the new HW/FW/FlashLoader. |
| TheSteve:
Don't forget the potential option of finding a way to install the older firmware just long enough to enable the features and then upgrading to current firmware. |
| Asmyldof:
I have a feeling reverting the flashery-upery-datery thing is either more tiresome, or more risky than finding the new hack. But I may be wrong. Not vested deep enough in the detailed matter of hacking Rigols yet. Once I am, I'm going to look into the DG series as well. |
| Howardlong:
--- Quote from: Asmyldof on September 24, 2015, 09:37:57 pm ---Well, it is absolutely certain that the keys are of the same format, we know that, we also know that the options are kept between upgrades, so that seriously limits the changes they could have made. 90/10 likelihood they only changed the parameters to the key system and not the actual key system itself. I did see a topic chain a while ago about someone making a PIC add-on (I think it was PIC) on the I2C to the FRAM that kept resetting the time-out on the trial options, as an alternative to making the entire FRAM write protected. I'm thinking of applying that until I manage to re-hack the new HW/FW/FlashLoader. --- End quote --- If that's for the 815, that was a feature I put forward here (as was the pins 7&8 trick). The PIC mod only reset the FRAM "clock" (not the RTCC), but allowed other updates to happen like static LAN config that was disabled by simple shorting of 7&8. I have the complete FRAM dump somewhere if you need it. |
| Asmyldof:
Ah yes, the name rings bells :-) I'm not very PICcy, so I hadn't checked it yet. Working on the Freelance assignment from hell right now, so it feels like I'm constantly out of time. But one way or another that's about to change soon. |
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