How to Backup the Firmware of a Dashcam ?

Mandami

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G90 A7LA70 1, 2, 3, 4
I tried to backup my G90 (A7LA70) but something doesn't work properly. When I tried to install it, the dashcam didn't start anymore. I had to resurrect the camera and tried again ...and so on couple of times.

For example I used:
rm a:/autoexec.ashfirmfl gen 6 bst bld hal pri rom dsp
d:/backup.binfirmfl gen 6 bst bld hal pri rom dsp
d:\backup2.binfirmfl gen 6 bst bld hal pri rom dsp backup3.bin
rm d:/autoexec.ash


and strangely, at the same address the results are different:
For example at offset 800:
the original (firmware.bin)
9E 0A 0B DF 03 00 01 00 05 06 DF 07 00 08 00 00
backup
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
backup2
C7 88 19 A9 16 6E DB E1 13 BF 2A 96 FE F0 3D 8D
backup3
DC 16 7A 85 83 C1 07 01 64 04 ED 91 9A 77 36 DB

at offset 240
the original (firmware.bin)
72 64 5F 66 6D 74 3D 6D 6F 76 5F 61 64 70 63 6D (rd_fmt=mov_adpcm)
all others (backup, backup2, backup3)
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 
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narin

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GS5000 firmware version 2.0.5 G2KB A
Me too I try on GS 5000 with autoexec.ash nothing seem to happened. My firmware version is 2.0.5 G2KB A this is a Blue menu version. The starting/ending logo is a red Mercedes Benz(my avatar) I finally found this firmware can be update by TF card under Yamaha.bin with no problem.

The AFT 1.3.2 or latest 1.3.3 version cannot compile the files back to the original like it should suppose to be after decompiling (just to prove the tool) the file length will short for 3 Meg!

Anyone here still got GS 5000?
 
Last edited:
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Mandami

Mandami

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Me too I try on GS 5000 with autoexec.ash nothing seem to happened.
Make sure your file is in Unix format

which means the terminator for a line is LF (line feed); also, you have to let an empty line.


short for 3 Meg!
maybe a better file compression ?
 
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narin

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GS5000 firmware version 2.0.5 G2KB A
Have done that and test once but now I bricked it with the Texet DVR 1G already!

Rename it to yamaha.bin place into SD Card updating sign was in progress live picture seen on screen, after switch off never on again. If plug into PC then the USB Device not recognized so I think it definately die.
 
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Mandami

Mandami

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wait, because I don't get it; maybe I'm too tired today.
I found one of your posts
The thread is in Russian I was there just for firmware.
http://www.taker.im/phpBB2/topic/13...1000-gse650-bluemenu-синее-меню/page__st__200
click the http://yadi.sk/d/X4ec6Oro7Qc_S in the thread for 2.0.5 G2KBA firmware download
This is good.
Have done that and test once but now I bricked it
To better understand: even if you had the original firmware, you still wanted to make a backup of the same firmware ?
I think it definately die.
Theoretically it's not. You still have the amboot_kernel_romfs_dsp_release.elf
 

narin

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GS5000 firmware version 2.0.5 G2KB A
Theoretically it's not. You still have the amboot_kernel_romfs_dsp_release.elf

Finally I can manage it! but a bit tricky to wake it up again I'll go through detail later. The only version of DU that do my magic is version 2.2.13.0 only! not 1.1.7.0 nor 2.2.19.0 I repeat it' version 2.2.13.0 only other version will lost connection during re-init prior to send the firmware data to the cam.
 

narin

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GS5000 firmware version 2.0.5 G2KB A
The BRICKED GS5000 of mine was come with V2.0.5 G2KB A blue menu which date/time display on the top left and km/h on the bottom left of the screen. I bricked it by the wrong firmware placed in MicroSD card by named it yamaha.bin and press the On/Off botton to power on by internal battery.

The progress dotted ring was turning on live picture keep displaying till everything quiet and off. I press power on button nothing happened no led light nor sound at all. I plug into PC use USB-miniUSB cable the red or orange led lit up PC WindowsXP popup the USB not recognized. I don't have my own autoexec.ash backup! still not working for me I don't know why and my EOF/LF is Unix format already!

I've try all night after read the #Firmware_Update_via_USB those bottons pressed can not make USB talk to PC. Finally I try to press and hold each button one at a time and then plug in the USB.
Bingo after pressed and held the Mode button then plugin USB the PC popup Found Ambarella board V 1.2.3 I then installed the driver and run the DU 2.2.19.0 but communication was dropped out during re-init progress so the .elf file could not send successfully to the GS5000(GS1000) unit until I've try all version I have and the v2.2.13.0 pull me out from the doom.

hope this will help someone.
Cheers,
 
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