Unusual error in firmware upgrade on Ezviz C6C cam

[charlie36]

Hi guys,

I have Ezviz C6C cam with me and i was trying to downgrade firmware on the device using the normal flow i.e. putting the firmware in SD card and then inserting the SD card in the device and resetting the device. But the firmware is not downgrading and the camera remains on the same firmware. So i tried the serial console method to find out what exactly is going wrong here...i've attached an image for your reference ...if anyone can help me with the error i'm facing would be of great help ..Thanks!!

 

[alastairstevenson]

i tried the serial console method to find out what exactly is going wrong here.

Your transcript shows that the firmware in the SD card is for a different platform - it's not the correct firmware for your camera.

 

[charlie36]

Hi Alastair,
Went through your thread and i must say it's a very interesting read ...picked few points from it as well ,but just one query ..as you already mentioned before the error i'm facing is for wrong platform ..i'm pretty sure that i have the firmware for the correct device i just want to know; can that error be mitigated following your approach?

 

[alastairstevenson]

Went through your thread and i must say it's a very interesting read

Do you mean this one?

Converting EZVIZ C6TC from Chinese to English

Hi, TLDR; I have installed US firmware on CN hardware but unable to connect to EZVIZ service. I purchased a couple of C6TC (CS-C6TC-32WFR) IP cams from TaoBao in an attempt to save a few dollars. What I didn't realise was that the cameras are region locked and it requires a Chinese phone...

ipcamtalk.com

Yes, a lot of tinkering, with a good end result.

i'm pretty sure that i have the firmware for the correct device

Where did you find the firmware, how is it confirmed it matches your device?

i just want to know; can that error be mitigated following your approach?

What you're asking I think is "can I hack the bootpara data to change the platform ID and will that work?"
I doubt that would work - more likely brick the device.
I suspect that you just need the correct firmware for that model.

 

[charlie36]

Yes, i found the link from this thread Converting EZVIZ C6TC from Chinese to English and i'm pretty sure it's the correct firmware for the make and model.

http://usdownload.ezvizlife.com/device/

CS-CV248-A0-32WFR/2.0/CS-CV248-A0-32WFR.dav just change the camera model with the one that is required.

 

[charlie36]

Also Alastair, is it possible to reverse the .dav firmware to do some reverse engineering on it? if yes could you nudge me into the right direction?

 

[alastairstevenson]

Also Alastair, is it possible to reverse the .dav firmware to do some reverse engineering on it? if yes could you nudge me into the right direction?

It may well be, but I can't check for a bit as I'm heading off for a few days.
Maybe do a forum search for the @montecrypto repacker.