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By: montis

montis — Tue, 01 Jun 2021 19:53:35 +0000

In reply to Ernesto. Yes, correct. You can read the contents (dump) of the serial flash chip with the help of Arduino/Flashrom.

By: Ernesto

Ernesto — Mon, 31 May 2021 16:28:12 +0000

ok you already answered this before, thanks

By: Ernesto

Ernesto — Mon, 31 May 2021 16:21:04 +0000

hi montis. a question. is it possible with the Arduino to copy the dump file from an original flash chip? If this were possible, maybe someone with a good DVR could do it.

By: Ernesto

Ernesto — Tue, 25 May 2021 20:40:41 +0000

Exactly, congratulations to aomway.
unfortunately the same cannot be said for Eachine.
my attempts to contact them were frustrated.
I will keep trying to find those files and if I do I will communicate it here.
thanks Montis.

By: montis

montis — Tue, 25 May 2021 19:15:21 +0000

In reply to Ernesto. Kiripolszky Károly (https://medium.com/@karoly.kiripolszky) has contacted me back in the 2017 with the bricked DVR module in his Aomway Commanders goggles. He successfully used Raspberry Pi, Linux and the flashrom to write the firmware DUMP file to the flash chip. The same method could be used for almost any serial flash chip. You need to have the DUMP file of the flash chip contents. This can be done either by reading the functioning flash chip or by obtaining the firmware DUMP file from the manufacturer. Aomway did the great job and provided the needed DUMP file, kudos to the Aomway!

By: Ernesto

Ernesto — Sun, 23 May 2021 08:58:27 +0000

I think they are totally bricked. I found this article and it is exactly the same thing that happens to the ev300d dvr.what I find difficult is contacting Eachine to get the stock firmware.
https://medium.com/@karoly.kiripolszky/how-to-fix-a-bricked-dvr-module-on-aomway-commander-v1-9fc05d0efeef

By: Ernesto

Ernesto — Fri, 21 May 2021 09:28:00 +0000

the files that are in banggood are to “fix” the latency.
it does not detect the sd card to be able to record. I have tried another new sd card and it does not recognize it either. Also, when I go into DVR mode everything is blocked, I cannot turn off if it is not by disconnecting the battery. any solution?
in the instructions for upgrading it says that the files SD_CarDV.bin and SdFwCode.bin must be inserted in the sd card. Where can I find and download the corresponding .bin files for ev300d?

By: montis

montis — Fri, 21 May 2021 06:38:11 +0000

In reply to Ernesto. Firmware upgrade files and the instructions manual for EV300D is on Banggood product page: http://bit.ly/Banggood-Eachine-EV300D-FPV-goggles

By: Ernesto

Ernesto — Wed, 19 May 2021 15:55:46 +0000

In reply to montis. what I need is to insert the file SD_CarDV.bin in the sd card so that it recognizes it and I can't find anything for ev300d. would you know where to find it?

By: montis

montis — Wed, 19 May 2021 15:11:08 +0000

In reply to Ernesto. No, they will not work. Look for the specific firmware update for EV300D goggles.