[FYT Android Head Units] gustden:
There is getting to be quite a bit of information to look through when looking for tip/solutions related to the new Joying 2GB / Sofia units. Since this is not a MTCB or MTCD unit, the threads seem to be scattered all over and very difficult to find in searching. I have seen roll-up threads for other units, that contain information such as ROMS available, tips, tricks and useful information. Kind of a "one stop shop" for the newer Joying HUs. If you have useful software, mod, tips, customization's, get something to work, etc please post here and I can include.

CPU Information - Rockchip Sofia x64 C3230RK / mali 450 GPU / Up to 1.2Ghz / 4 core / FYT5009 SoM - rated to run at up to 85C. My particular is unit clocked at 1.04Ghz.

Advanced Settings Password: 3368

Homescreen menu: 8086

Backlight Current menu: 5768

Android 6 Thread

https://xdaforums.com/android-auto/...ing-intel-head-unit-android-6-update-t3597121

Android 6 specific tips:

ADB Access: https://xdaforums.com/showpost.php?p=71616884&postcount=273 -OR-

https://xdaforums.com/showpost.php?p=72057022&postcount=12

Viper4Android: https://xdaforums.com/showpost.php?p=72064749&postcount=41

Latest ROM - Current ROM can be downloaded from link on the Joying blog site.

https://www.carjoying.com/Joying-blog/59.html

Android 5.1 Discussion about the Feb 22, 2017/March 5, 2017/March 15, 2017 updates:

https://xdaforums.com/android-auto/android-head-units/joying-intel-update-feb-22nd-t3561285

People have experienced issues with the Joying Launcher (UI3) after the update. This seems related to having other packages (google voice search ) installed prior to installing the ROM. Install time 25-35 minutes.

Recovery from non-bootable system - Without being able to access recovery, about the only solution is to reload the ROM package. Unzip ROM to SD card or USB stick, put in unit (GPS Maps slot, if using SD card ) and press the 'recessed' reset button. The unit should find the update and reload the ROM. This will wipe your data, but does leave the apps. If you use titanium backup, and have a backup, you can restore your data fairly easily. See blog article above for step by step instructions.

Root - Unit comes with root accessible in adb. SuperSU can be installed easily. There are 2 methods for installing superSU. The first method is an overwrite of the boot partition with a pre-rooted image. Problem here is if future upgrade makes boot partition changes, this method will overwrite with an older version. I recommend method 2, which modifies the existing boot partition ( need source so I can provide credit ).

https://xdaforums.com/showpost.php?p=69648860&postcount=84&nocache=1&z=8361786322568856 (over-writes boot partition / may not work on Joying Feb update )

https://drive.google.com/file/d/0B4qmTV7N4JliSjZMdGg3Z18wbkU/view?usp=sharing ( modifies existing boot partition )

OS & Google Apps - Android 5.1.1 ASOP based w/ pico installation of google applications. Voice actions are supported with installation of 'Google App' from play store. No support for google search talk back.

Recovery- A recovery partition is present but does not have any type of graphical UI. It does look like a complete stock android ( command line ) recovery, but no access using USB is available. It maybe be possible using PC-PC OTG cable.

SD Cards - I have not heard of any sdcard size limitations, up to 200GB have been reported to work. Must be formatted as FAT32. NTFS, exFAT, and ext3/4 do not work. You can format a USB stick with ext4 and it will work fine.

Google Voice Calling - Stock BT dialer crashes when being called from google applications ( such as google voice search ). Workaround is available.

https://xdaforums.com/android-auto/android-head-units/google-voice-to-initiate-calls-joying-t3528923

Enable OK Google from any screen - https://xdaforums.com/showpost.php?p=72447390&postcount=968

Bluetooth Tethering & BT Settings - Bluetooth tethering, connects instantly, very reliable connection, works great for streaming music, gps etc. Saves phone battery vs WIFI hotspot. Limited to ~2Mbs ( slower than WIFI sharing )

https://xdaforums.com/android-auto/...elopment/bluetooth-settings-launcher-t3504526

(also good discussion here on the effects of process killing when entering standby )

Difficult to pair BT devices - Forces device pairing into database - Device pairs normally once HU thinks it has connected previously. I was able to pair TPMS, keyboard, etc using this method(s).

https://play.google.com/store/apps/details?id=com.brachcon.btautopair&hl=en

Modified stock bluetooth app to allow connection to all devices

https://xdaforums.com/showpost.php?p=71280945&postcount=88

Backup Cam guideline mods - Make your lines match your camera view

https://xdaforums.com/showpost.php?p=70325711&postcount=403

Apps not working after resume - The joying code will kill most applications when going into standby. This is really bad for apps that are supposed to be run at boot and background process, as they are not restarted when exiting standby. Symptoms include, widgets not updating, apps not getting GPS lock, process show running but background services are no longer running. This can be fixed by installing an updated apk file in /system/app/Sofia-1-C9-Server-V1.0 which removes the task killer. Also the key/button mods V2+ (below) will remove the task killer.

https://xdaforums.com/showpost.php?p=71047452&postcount=62

Key/Button Mods - Extend the usefulness of your steering wheel keys and on unit buttons- V2+ also removes app kill on standby.

https://xdaforums.com/android-auto/android-head-units/joying-2gb-steering-wheel-key-t3543390

If you just want to change the SRC button to call up google voice search, go here. ( also removes task killer )

https://xdaforums.com/showpost.php?p=70480258&postcount=549

Immersive Mode / removes top navigation bar - No app needed - Full Screen on apps you choose, can be set from adb w/ root. Argument is list of package names separated by "," or "*" for all apps. ( survives reboot )

Specific apps:

settings put global policy_control immersive.full="com.google.android.apps.maps,com.pandora.android,com.spotify.music"

All apps:

settings put global policy_control immersive.full="*"

Clear / back to default

settings put global policy_control immersive.full=

Change Overscan - problems touching the corners, changing overscan can help:

https://xdaforums.com/showpost.php?p=71492575&postcount=169

Phone/Tablet view on apps - No app needed - Change from 160dpi -> 161dpi gives "phone" view of many apps instead of "tablet" with no noticeable size change to other things. Done via adb. Requires reboot to take effect.

> wm density 161 # ( phone mode apps )

> wm density 160 # ( original tablet mode apps )

Heatsink mod Unit can run hot at heavy cpu load (such as benchmark testing). Can slightly reduce performance by throttling. Some users opt to add additional heatsink/fan to reduce temperatures.

https://xdaforums.com/android-auto/android-head-units/inside-look-joying-android-head-unit-t3546872

Red Themed Radio - Re-theme of stock apps - Don't like the look, change it. Can be done easily by unzipping the apk file, change images, rezip and install.

https://xdaforums.com/showpost.php?p=70367793&postcount=434

More Radio Mods ( Layout change, more colors )

https://xdaforums.com/showpost.php?p=71625005&postcount=286

xposed / xposed framwork - At this time, I am not aware of any way to make this work with the new Joying units. I have tried several packages and all have resulted in a non-bootable system. Please let me know you go get it to work.

Viper4android - Installer script that works on these models

https://xdaforums.com/showpost.php?p=71317345&postcount=101

Nova or other launcher - Need to freeze or remove stock Joying launcher(s) in some cases, for other launchers to work correctly.

Other very useful Joying 2gb/sofia threads:

Audio Discussion / DACs - https://xdaforums.com/android-auto/android-head-units/joying-2gb-sofia-headunits-common-t3577217

https://xdaforums.com/android-auto/...pment/joying-android-5-1-1-2gb-units-t3465561

https://xdaforums.com/android-auto/...opment/2gb-ram-intel-cpu-heres-specs-t3468322