question regarding ecu411 ?

This talks about BDM used on card Engine computer
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tomanycars
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Joined: Mon May 09, 2022 11:19 am

question regarding ecu411 ?

Post by tomanycars »

I am trying to learn further what the USBJTAG tool can do... I don't have a ECU411 , i and intrigued to know what it is , is it Bosch , Denso ecu or some sort?
also i watched a video that was posted regarding reviving a bricked ECU411 , and a bin file is being written over to it , some sort of flash file...

wouldn't that need checksum coming out and going back in ?
usbbdm
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Re: question regarding ecu411 ?

Post by usbbdm »

checksum is nice to have but not absolutely needed.
tomanycars
Junior Member
Posts: 14
Joined: Mon May 09, 2022 11:19 am

Re: question regarding ecu411 ?

Post by tomanycars »

usbbdm wrote: Mon Jun 27, 2022 8:11 am checksum is nice to have but not absolutely needed.
Hmmm 🤔 I was always under the impression , that a flash file being copied over especially on to a ecu , had to have a checksum to ensure integrity? Is that not always the case then ?
usbbdm
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Joined: Mon Jul 18, 2005 9:33 pm

Re: question regarding ecu411 ?

Post by usbbdm »

The programmer is just a programmer. The firmware itself might need to use checksum to check the validity of the firmware before it boots from it.
Actually checksums are not universal. ECU411 has its own checksum. For example if you want to modify the serial number, then you need to modify its checksum in the firmware to make sure the serial number is valid.
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