Products > Test Equipment
Sniffing the Rigol's internal I2C bus
marmad:
--- Quote from: AndersAnd on January 09, 2014, 02:40:46 pm ---I believe in at least most Western countries you don't void your warranty by opening your product and you don't void your warranty by destroying or removing any warranty sticker.
--- End quote ---
Nonetheless, it might save you time to remove the sticker without breaking it (which is easy to do), then in possible arguments/discussions with companies and service personnel - which is, after all, the point of Mike's video.
sled:
I can't really imagine that RIGOL would supply each device with its own unique private and public key... Simply because it's a nightmare to keep track of all keypairs and if the dataset is lost, no options could be sold anymore...
Maybe there is a universal key that gets shuffled by either the model number or serial number?
Would it be possible to watch the memory address where the keys are and back trace the method that puts them there? Or scanning the dumps for references to this memory address?
AndersAnd:
--- Quote from: marmad on January 09, 2014, 03:07:58 pm ---
--- Quote from: AndersAnd on January 09, 2014, 02:40:46 pm ---I believe in at least most Western countries you don't void your warranty by opening your product and you don't void your warranty by destroying or removing any warranty sticker.
--- End quote ---
Nonetheless, it might save you time to remove the sticker without breaking it (which is easy to do), then in possible arguments/discussions with companies and service personnel - which is, after all, the point of Mike's video.
--- End quote ---
Yes I fully agree with that. If you can open your device without damaging the sticker then by all means do it as it doesn't require much effort. Even if the warranty isn't broken with a broken sticker, the seller might argue otherwise until they are told otherwise by a consumer organisation or court. It could potentially save you a lost of hassle and arguing even if you have the law on your side.
But remember you shouldn't just give up possible future warranty claims just because of a broken or missing "warranty void" sticker - or a custom firmware for that matter.
I have also read (on this forum IIRC) one who completely removed his warranty sticker and all goo traces of it on his Rigol and later sent it to repair under warranty. They repaired it under warranty without complaining of any sticker missing.
I also read about another one who sent a DP832 to have the the PCB replaced with the new improved version with a larger heatsink. When he received it back from repair the warranty void sticker was missing or broken. So what's he supposed to do if he has another warranty claim and the warranty is broken by a missing sticker when he got it back from repair? I'm pretty sure I read it somewhere on this forum and I think it was TEquipment he sent it to.
I've also read of one where the sticker was missing on a device from new. And how can the seller even prove there has ever been a sticker on a device even if there has been? They could also have forgot to put it on during production.
So if you have a broken sticker it's better to just remove it completely and all it's goo traces before sending it to repair. The repairman might not even notice a missing sticker then, but he will notice it if it's broken.
thetooth:
--- Quote from: AndersAnd on January 09, 2014, 03:19:52 pm ---
--- Quote from: marmad on January 09, 2014, 03:07:58 pm ---
--- Quote from: AndersAnd on January 09, 2014, 02:40:46 pm ---I believe in at least most Western countries you don't void your warranty by opening your product and you don't void your warranty by destroying or removing any warranty sticker.
--- End quote ---
Nonetheless, it might save you time to remove the sticker without breaking it (which is easy to do), then in possible arguments/discussions with companies and service personnel - which is, after all, the point of Mike's video.
--- End quote ---
Yes I fully agree with that. If you can open your device without damaging the sticker then by all means do it as it doesn't require much effort. Even if the warranty isn't broken with a broken sticker, the seller might argue otherwise until they are told otherwise by a consumer organisation or court. It could potentially save you a lost of hassle and arguing even if you have the law on your side.
But remember you shouldn't just give up possible future warranty claims just because of a broken or missing "warranty void" sticker - or a custom firmware for that matter.
I have also read (on this forum IIRC) one who completely removed his warranty sticker and all goo traces of it on his Rigol and later sent it to repair under warranty. They repaired it under warranty without complaining of any sticker missing.
I also read about another one who sent a DP832 to have the the PCB replaced with the new improved version with a larger heatsink. When he received it back from repair the warranty void sticker was missing or broken. So what's he supposed to do if he has another warranty claim and the warranty is broken by a missing sticker when he got it back from repair? I'm pretty sure I read it somewhere on this forum and I think it was TEquipment he sent it to.
I've also read of one where the sticker was missing on a device from new. And how can the seller even prove there has ever been a sticker on a device even if there has been? They could also have forgot to put it on during production.
So if you have a broken sticker it's better to just remove it completely and all it's goo traces before sending it to repair. The repairman might not even notice a missing sticker then, but he will notice it if it's broken.
--- End quote ---
Its only real use for warranty is if you cut the sticker, clearly this means someones opened the device, a removed or partially lifted sticker has no meaning at all because they will detach/become damaged naturally.
In my experience the _only_ people who check those stickers are asshole merchants selling low value items that are too cheap to pay the return shipping, here in Australia i've seen just about every level of stance on warranty from companys like Dell Business who have sent replacement equipment before i even sent the faulty item back based entirely on my word(they did check the item and sent a report confirming the problem), to a computer store that refused to honor basic consumer law until we had police presence.
AndreaEl:
Are some days that i not follow this topic and i have some question that i have not understand...
I have a Rigol DS2072 (HW 2)
I have a not update firmware and i must update, is right that the last version is: 00.02.01.00.03? (I have read about clear FRAM after update).
With this version is available the 300MHz BW Option, but i have read that 200MHz BW option give more performance in LF than 300MHz in HW 1. Is the same for HW 2 or i can Install 300MHz BW with no problem in my HW 2?
I have read about newest code for enable 300MHz and CAN, but not understand what enable each code. I have read about DSHH, DSGH etc.
I search for: 200MHz + All Option (include CAN), 300MHz + All Option.
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