Is there a possible way to mod the firmware for chinese 12" mirror dash cam? (imx415, hisilicon chip)

[jthesupreme]

https://www.aliexpress.com/item/4001351522965.html
I bought a 4k mirror dash cam in Aliexpress, a typical IMX415 4K Front + 1080p Rear cam with GPS.
I used to have a similiar one but with both 1080p on front and rear.
The problem is that my old one used to have a reverse rear camera option(upside down) that allows me to install the rear cam upside down and have no problem viewing it.
My new one doesn't have such option, and I want to know if I can get a firmware that have this option or maybe modify the firmware myself. Is there a software that I cant get my hadns on?
Thanks in advance.

 

[jokiin]

you'll find the most information on modifying HiSilicon firmware over here

Forums - GoPrawn action and dash cam forums

GoPrawn action camera hacks and mods discussion forum. Guides, reviews, firmware updates and more.

www.goprawn.com

 

[jthesupreme]

you'll find the most information on modifying HiSilicon firmware over here

Forums - GoPrawn action and dash cam forums

GoPrawn action camera hacks and mods discussion forum. Guides, reviews, firmware updates and more.

www.goprawn.com

omg thanks for the info love you so much I could throw myself at you right now <3 <3 <3

 

[helg]

I bought a 4k mirror dash cam in Aliexpress, a typical IMX415 4K Front + 1080p Rear cam with GPS.

The firmware image you have posted does not support IMX415 sensor, but only IMX335.
Either you have got the wrong firmware, or your mirror dashcam is a fake model, which upscales sensor data from 2K to 4K.

I have found a korean page reselling this mirror dashcam SEAMETAL 4K https://m.blog.naver.com/1001dongan/222186738795

Model: D40401
Display: 12"/ 30.5cm
Memory card: Class 10 TF card(8-64GB)
Video resolution: 3840×2160P(4K) & 1920x1080P
Video Encode: H264/ H265
Camera Lens: Sony IMX415

The firmware version upgrade_FH-Hi3559V200_256x16_1013_20200714.111605.zip is a bundled Hi3559V200 Linux firmware image containing
u-boot, rawparam, rawparambck, liteos, Linux/uImage+FDT and rootfs partitions, similar to the software used by DDPAI and other Hi3559V200 dashcams.
The video sensor is controlled by liteos, and here is the sensor information compiled into the firmware

$ strings ~/MIRROR/liteos  | grep -i imx
imx335
SensorImx335 param load success!
IMX335_init Not support this mode
-------Sony IMX335_init_2M_1920x1080_10bit_linear60 Initial OK!-------
-------Sony IMX335_init_5M_2592x1944_12bit_linear30 Initial OK!-------
-------Sony IMX335_init_4M_2560x1440_10bit_wdr25 Initial OK!-------
-------Sony IMX335_init_5M_2592x1944_10bit_wdr30 Initial OK!-------
IMX335_forcar_i2c_init
IMX335_forcar_read_register
IMX335_forcar_write_register
imx335_reset
imx335_check
imx335_check bChecked=%d
----hello imx335_mipi-----
----not imx335_mipi-----

The sensor in this mirror is IMX335 and not IMX415, and it does not support native 3840×2160P(4K) resolution!

 

[Grunta]

Simplist option is to use VLC to view and just rotate the image