[Android Head-Units] tribalfs:
General information

Version K5 /K5-High, C900

Operating system: Android 7.1.1

Processor and frequency: Allwinner T7, 6 cores, ARM Cortex-A7, 0.8-1.3GHz

RAM: DDR3, 2 GB

NAND flash memory: 16/32GB

360° Camera and DVR using 4 HD/FHD fish-eye cameras (high version uses Sony's Full HD lenses)

Support dynamic steering wheel trajectory on supported cars (trajectory canbus needed)

Display: Digital TFT LCD monitor from 7" 16: 9 resolution 1024x768 up to 10.1" IPS resolution 1280x960

Touch screen: Capacitive, multi-touch

UI supports split display

Built-in Wi-Fi 802.11b/g/n

Bluetooth V4. 0, support A2DP, OBDII using Bluetooth chip BC-06

1080p video playback supported.

USB supported: 3 USB ports (tested on 2TB external drive)

Tuner Chip: TDA7786 /*TDA7708

Tuner receiving frequency range: FM: 65MHz ~ 74MHz, 87.5 ~ 108MHz; AM: 522KHz ~ 1710KHz

Preset stations: FM: 3 blocks of 6 stations; AM: 2 blocks of 6 stations

RDS Support: Stated, but not visible in the interface

CANBUS support for air-conditioned cars, doors, steering wheel, song information on ODO, parking assist sensor, ...

Digital audio processing chip (DSP) of ROHM Semiconduction (Japan)

Operating voltage: DC + 10.8V - + 14.4V ULF

Maximum output power:*4x41W /*4x48W

Amplifier chip: STMicroelectronics 7388 /*TDA7851

Operating temperature:*-20 ℃ - + 70 ℃

Storage temperature :*-40 ℃ - +80 ℃

About Allwinner T7

The Allwinner T7 processor is designed for smart cars. The Chinese company Allwinner introduced the T7 processor, specially designed for use in various automotive systems.

The announced product combines six ARM Cortex-A7 processing cores. The graphics subsystem relies on the integrated Mali-400 MP4 GPU controller. Provides the ability to encode and decode video in H.265 1080 / 60p format.

The chip includes an EVE engine (Embedded Vision Engine), which accelerates the execution of operations related to machine vision and object recognition.

In addition, the Allwinner T7 processor is characterized by a wide range of operating temperatures - from minus 40 to plus 85 degrees Celsius. This T7 processor is said to be the first Chinese processor achieving AEC-Q100 Grade 3 qualification. The chip can be used in tandem with software platforms based on Android and Linux.

On-board infotainment centers, digital dashboards, driver assistance systems for driving, all-round visibility, etc. are named as product application areas. In other words, the chip is oriented to modern “smart” cars with a large number of electronic assistants and intelligent systems.

Allwinner T7 Automotive SoC Complies with AEC-Q100 Grade 3 Specifications - CNX Software

T7 Brief

Allwinner T7 for automotive and other solutions for VR, industrial and AI

Videos

Photos

Pinout of connector

Instructions for Aligning camera eyes and stitching

The canvas consists of 4 canvases, of which 2 canvases A and two canvases B have standard sizes as shown below. For ease of installation, you can print these canvases into a single sheet, which will greatly reduce the time required for placing the canvas and measuring the size as all parameters will be fixed according to the canvas.

After placing 4 tarpaulins around the car as shown below:

Firmware

V7.3.2_20191009.110137_OLS2-X-T7.rar

V7.3.2_20191127.173408_OLS2-X-T7.rar

V7.3.2_20200106.111624_OLS2-X-T7.rar

V7.3.2_20200303.175146_OLS2-X-T7.zip

Instructions

Step*1. Download the firmware file for the Ownice C900/K5 above.

Step 2. Extract and copy the files to the root directory of the USB to be used. Files for full firmware for Ownice K5/C900 usually include the following components (depending on the updated rom, it may be less or more in terms of the number of components):

d1dd5206-1edf-11e9-a6db -0bc477567750 encrypted boot img

d2a9711a-1edf-11e9-a064-ff4db5a9b492.0 system part1

d2a9711a-1edf-11e9-a064-ff4db5a9b492.1 system part2

d2a9711a-1edf-11e9-a064-ff4db5a9b492.2 system part3

6cdfbbd8-9a00-11e7-8c64-33bdecde7c40

Step 3: Connect the USB to the headunit or car and go to Settings>Car settings>System updates. A dialog box should appear. It is recommended to check the Clear data and format Flash. Then click the USB box, wait for the update process to complete. The headunit will reboot.

Step 4: After restarting the software, drag the notification bar down, press the reset button to restart (restart required) after you go here to reinstall the necessary software

MCU

MCU for 7708 Radio:

T7.4.3-220-61-A4C681-200406.zip

T7.4.3-220-10-A4C681-200406.zip

MCU for 7786 Radio:

-

The procedures for upgrading the MCU for Ownice C900 are as follows:

Step 1. Download the MCU to your computer

Currently the Ownice K5/C900 has two different MCU versions and cannot be mixed, you need to distinguish which one you are using to download the correct MCU. To determine the right MCU, please go to Settings -> System -> About to see current MCU parameters of the head (see illustration below).

MCU version

T7.4.3-220-10-A4C681-190827

Observe the red underlined portion and determine as follows:

If the current red line is A466, the MCU is the Radio 7786. Download the first MCU with Radio 7786.

If the current red circle is A4C6, the MCU is Radio 7708. Download MCU with Radio 7708

After downloading the correct MCU for your head as instructions, extract and copy the file (e.g.*68a1a82a-ba3d-11e8-b378-0f810ac331da*) to the root directory of the FAT32 formatted USB.

Step 2. Update the MCU on the top

Plug the USB into the head, go to "Settings" -> "Vehicle settings" -> Update MCU -> Select the USBx tick (x can be 0,1, 2, 3, ...) -> The head will automatically identify and start updating the MCU -> Wait for the process to complete the first will restart itself and the update process was successful.

Passwords

360 camera system settings: 4321

extra settings: 123456 and 1260

developer mode/factory reset: 7890

developer mode: john@tw-desktop

Issues/Bugs

Issue: Speech button command not supported.

Issue: Google voice command unable to process call/dial contact/phonenumber command. Note: Ownice K5/C900 Bluetooth App supports android.intent.action.CALL

Workaround: Use Google Go instead (a ligher version of google app).

Issue: Factory reset will make 360° View app stuck on a screen asking for ACTIVATION. ACTIVATION button does not work. You will be stuck on this screen and you will not be able to access the menus and other 360° View UIs.

Fix: Install the attached cert file to the headunit then ACTIVATION should work. Headunit must be connected to the internet.

Software Mods

Magisk Root

Procedures for rooting the ownice C900/K5

Step 1: Download and extract patched_boot_V7.3.2_20200106 (note: for ownice C900/K5 with V7.3.2_20200106.111624_OLS2-X-T7 system).

Step 2: Copy the extracted boot file d1472b36-ba3b-11e8-add9-279b535dcbc9 to the root directory of a USB device and connect the USB to the headunit.

Step 3: Go to Settings > >Car Settings>System Update in your Ownice C900/K5 and tick USB (similar procedures for installing a firmware). The headunit will reboot and install the boot and restarts.

Step 4: After headunit UI load, download the latest magisk manager and install this application.

Step 5: Open the Magisk Manager. The headunit should be rooted.

Unpacking/Repacking encrypted boot img in Windows

1. Decrypt/Encrypt the file using Kaier support tool

Note: Use this decrypted boot img to patched with magisk using the Magisk Manager.

2. Unpack/repack the decrypted boot.img using imgRePacker.

Unpacking/Repacking the system in Windows

To unpack:

1. Put all the system files into one folder

Sample system files:

d2a9711a-1edf-11e9-a064-ff4db5a9b492.0

d2a9711a-1edf-11e9-a064-ff4db5a9b492.1

d2a9711a-1edf-11e9-a064-ff4db5a9b492.2

2. Press Win + R on the keyboard, type cmd , press Enter.

Go to the folder with the firmware by entering "cd [location of the folder]"

3. Execute the ff copy command:

copy /b *.0 + *.1 + * .2 system.img

To Repack:

You need:

-HEX editor. You can use this.

-Checksum calculator. xcheck32.exe. Credits @angelbbs and @dickjones

1. Open the system.img file in the HEX editor. Search for the line " ro.fota.device = ". Change the code after the device code to

0000

. For example, OLS2-X-T7_0011> OLS2-X-T7_0000. Save the file and close the Hex editor.

2. Put the xcheck32.exe in the folder with the system.img file. At the command prompt, type xcheck32.exe -d system.img

3. Open the HEX editor again. Go to Advanced>File Tools>Split file. Select the system.img. Set the name of the firmware file, where to save in a separate folder. Choose a file size of 400 MB. The output should be three files. We give their names in accordance with the names of the firmware files.

-

360 App

Baony.tw360_V1_14_261_Release

Hardware Mods

Blower Fan Installation

Adding blower fan (from old PC) to for faster heat dissipation. Thus cooler unit and lesser/no cpu throttling.

12v CPU fan tapped to ACC and Ground pins of the headunit connector.

Another mod from iskander-se of 4pda using a laptop fan.

Fan mod by @drkhurshid

Source:

4pda.ru

icarvietnam