@Dasaita Official @Dasaita team @James Varney i just received the G12 unit under order:SP-DA4438, i follow the installation instructions, my car is Toyota corolla 2015 model ZRE171L-GEPNKV, i have the following issues
1- reverse camera not working and the screen not responding at all even the black screen with yellow triangle not show up, i attached the camera power cable in the reverse light and the vedio cable to yellow CAM-in cable and triger cable to car back cable as shown in attached vedio
2- the steering wheel control not working
3- the AC & door indication not working
4- External MIC not working ( select between Internal & External became avalible after the update), i do a test using voice recording app, Internal Mic resopnd when recording and the External Mic not
i review the frequent problems in the page and i found that may be if i update the firmware and MCU the problem will be solved , so i update the firmware using 20231229 and the MCU MTCH_HA4Z_V4.09b_1 ( i will attach the system photo after updates)
attached also the settings for the canbus
still the same problems not solved
@Muhammad Fadl Please ignore my message in the morning. Regarding to the back camera. Please kindly remove the connector(See the attached pic) 
If still no luck, we are wondering if you could check if the connection is the same as this video.
https://www.youtube.com/watch?v=CnkfOYrUrqw
As to the Mic, we would like to tell you that the Mic settings in Factory settings > other is not available now, if you need to check whether the internal or external works, you need to unplug the external mic to activate the internal one.
Regarding to the canbus, we are wondering if you could check the pins on the OEM canbus and swc plug. Would kindly send us photos of this OEM plug so that we could check if these pins have according wires on your car which could activate the functions as well.
Thanks for your replay
my car originally did not come with OEM CANBUS
for the reverse camera, i remove the connector as you highlighted, i cut the orange cable come out from the power cable and connect it again with the triggering cable of the camera cable, then the camera worked fine
for the SWC, i used the two additional wires ( key 1, Key 2) with one brown cable from the power cable set to connect it with the car connector, the manual assign for SWC activated and work fine with me now
for the MIC, i try to follow up the recommendation in the post (ZLink Microphone with Apple CarPlay Issue) where we should use the firmware 20240111 update to solve the internal MIC bad quality and External MIC not responding, but unfortunately the update gave me error ( error image attached)
i hope to solve this problem since the apple car play is useless with bad quality internal Mic, also i cannot figure out how to connect the iPhone Bluetooth with the unite without activating the Zlink (apple car play), every time i connect the iPhone to head unit by Bluetooth, apple car play automatic activated and when i close it and try to connect the phone Bluetooth, apple care play start again
for the Door opening & AC indication still not solved
for the car fuel consumption and trip data still not reading
I managed to run the update, but after the update the internet MIC work ok but the external MIC did not respond
also after the update the GPS not working as attached image
@Muhammad Fadl Regarding to your issue about the GPS, we are wondering if you have connected the GPS ant in a correct way. Normally, we suggest you wire it on the windshield. Here is the instruction.
I follow the steps in the video, no file generated
