Products > Test Equipment

Brymen BM789

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EEVblog:

--- Quote from: J-R on July 27, 2022, 06:07:40 pm ---I'm not aware of any Brymen DMMs that have updateable firmware...

--- End quote ---

The 78x series does.

NoMoreMagicSmoke:

--- Quote from: EEVblog on August 01, 2022, 01:14:22 am ---
--- Quote from: J-R on July 27, 2022, 06:07:40 pm ---I'm not aware of any Brymen DMMs that have updateable firmware...

--- End quote ---

The 78x series does.



--- End quote ---

Dave are you allowed to say whether that programmer can/cannot read from the chip?

EEVblog:

--- Quote from: NoMoreMagicSmoke on August 01, 2022, 01:19:42 am ---Dave are you allowed to say whether that programmer can/cannot read from the chip?

--- End quote ---

IIRC I tried that when I played with it and got nothing. So I presume it's protected.

NoMoreMagicSmoke:

--- Quote from: EEVblog on August 01, 2022, 03:01:49 am ---IIRC I tried that when I played with it and got nothing. So I presume it's protected.

--- End quote ---

I can't say I am surprised. With the lengths they went to obscure which chips are used I would be a bit perturbed if there wasn't some type of read protection. It's a bit of a bummer that you can't at least read out the EEPROM values within the CPU to enable repairability. Of course there are safety issues with doing modifications/repairs on a DMM, so probably for the best in this case.

J-R:

--- Quote from: EEVblog on August 01, 2022, 01:14:22 am ---
--- Quote from: J-R on July 27, 2022, 06:07:40 pm ---I'm not aware of any Brymen DMMs that have updateable firmware...

--- End quote ---

The 78x series does.


--- End quote ---

OK, I have a BM789 that has old firmware, how can I get it updated?

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