Recent content by davidew98

Looks like you have the Nelly's version: https://support.nellyssecurity.com/hc/en-us/articles/360038885453-How-to-Upgrade-Your-NSC-DB2-Video-Doorbell-s-Firmware

As to not brick beyond our current knowledge I highly suggest he puts the rca firmware on his rca vdb then watch serial as he does a partial reset as well as a full reset to see what both erase if anything.

Wow now your making me interested even more. Looks like this dav file could actually be some compressed file like a tar maybe. This is good stuff.

Seriously I think if someone has a dead vdb I would suggest taking a blank se card and putting 2 copies of firmware on it ezviz and digital that sdcatd will most likely recover 90% of dead vdb

Digitap is the unbranded uboot update file but the unattended recovery tools will want to make sure it’s branded

This camera could be a ezviz camera which means it has a ezviz bootblock it’s looking for ezviz.dav firmware file to recover the bad firmware would be nice to know if other brands are looking for ezviz or a different file. They all might in fact look for the same file.

Tap a button on your coomputee after the camera boots and see if you get a Linux prompt or a password prompt

I highly doubt the code is missing. It most likely is just options set in the nvram or config file

Yes changing a 1 to 0 or 0 to 1 but not the firmware. I seriously think it’s this config file he’s talking about

Dont think so, it might be simpler. I won’t be home for a while so can’t jump into it like he did but great stuff has been found.

Apparently you missed the fact that it’s running Linux or something of the sort hence why it has uboot. If this is the case then it’s simpler then modifying firmware and is as simple as logging into the device and turning options on by hand.

im saying this one last time. No one started something again. You are the one continuing this and attacking everyone. You are the one off topic. You are the one attacking me privately now. You have stated your piece. Everyone knows your postion Drop the subject and end this NOW! this is not the...

FYI... The forum is full of troubleshooting and right and wrong info that people conclude with the right info after testing and helping each other The 101 is the RIGHT info after testing and finding the answers either in pdfs, sites, or our own tests. We can't weed out the whole forum of all...

you are out of line! drop the subject!

but I suggest staying away from the highside just to help with the voltage spike of a button push