Question Carlink change DPI?

[werther041]

I recently bought FYT based head unit that comes with wireless car play (reseller called Xima). the app for wireless car play is Carlink. default resolution is about 480p. the Carlink app setting page doesn't give much options beside noice cancelation mic channel, car logo, wifi 2ghz or 5ghz.

Is there any updated version that allow me to change DPI and key mapping?

 

[j-5]

I believe CarLink 2 is what comes with the newer units. Check with your reseller to see if available.
Mine doesn't have the option to change resolution though, you may have to go into the Android settings for that.

 

[werther041]

so I managed to flashed the head unit with latest Joying firmware and app. Car link upgraded to Car link v2. (v21.1014.1122 to v2.21.1224.1818, strange versioning convention...) UI looks the same. gained 2 new options: FPS and auto connection. all the icons still looks pretty big. and I still can't map the Siri activation button.

Used to have car play USB dongle, the software provide a lot more options, such as changing DPI and key mapping. maybe I should keep using the USB dongle until I can find a solution.

 

[amitush]

so I managed to flashed the head unit with latest Joying firmware and app. Car link upgraded to Car link v2. (v21.1014.1122 to v2.21.1224.1818, strange versioning convention...) UI looks the same. gained 2 new options: FPS and auto connection. all the icons still looks pretty big. and I still can't map the Siri activation button.

Used to have car play USB dongle, the software provide a lot more options, such as changing DPI and key mapping. maybe I should keep using the USB dongle until I can find a solution.

I also bought xima multimedia this year, it have carlink1.0, I was also looking to update car link to version 2.0. How did you updated it with Joying firmware? Can you guide me?

 

[werther041]

I also bought xima multimedia this year, it have carlink1.0, I was also looking to update car link to version 2.0. How did you updated it with Joying firmware? Can you guide me?

Seems to me Xima's firmware is just slightly modified version from Joying firmware (and they make it looks worse).

All the instructions are in this wonderful mega thread:

General FYT based Spreadtrum uis7862 (unisoc ums512) - Q&A, Mods, tips, firmware

Last revised: 11 January 2023. This thread is supposed to become a "one fits all" thread about FYT based Spreadtrum uis7862 (Unisoc ums512) head units and its software, modded or not. The first few posts will be "collection" posts for all kind...

forum.xda-developers.com

If you did it couple of times, it's pretty straightforward. and here's my TL;DR version:

1. pick one firmware from Joying website that matches your HU. I picked this one:
"...firmware for 9 or 10 Inch 1280*720 model with MIPI screen/New UI (As below example)"
Updated file please click Here

2. backup your existing firmware just in case and grab the configuration file:

General FYT based Spreadtrum uis7862 (unisoc ums512) - Q&A, Mods, tips, firmware

Last revised: 11 January 2023. This thread is supposed to become a "one fits all" thread about FYT based Spreadtrum uis7862 (Unisoc ums512) head units and its software, modded or not. The first few posts will be "collection" posts for all kind...

forum.xda-developers.com

after backup, there should be config.txt file that defines the screen orientation and Bluetooth type.
mine shows:
ro.sf.swrotation=90 sys.fyt.bluetooth_type=0

3. based on config.txt file extracted from backup, update the config.txt in the firmware package you downloaded from Joying, and make update, this would ensure the correct screen orientation and functional Bluetooth.
ro.sf.swrotation=90 sys.fyt.bluetooth_type=0

4. Get the Change reseller ID script. ChangeFytmanufacturer , This is for changing reseller ID.
ref:

General FYT based Spreadtrum uis7862 (unisoc ums512) - Q&A, Mods, tips, firmware

Last revised: 11 January 2023. This thread is supposed to become a "one fits all" thread about FYT based Spreadtrum uis7862 (Unisoc ums512) head units and its software, modded or not. The first few posts will be "collection" posts for all kind...

forum.xda-developers.com

Xima doesn't have assigned reseller ID, so use 1 (Joying uses 43).
ChangeFYtmanufacturer, /lsec_updatesh/7862lsec.sh
change 99 to 1
sed -i "25i ro\.build\.fytmanufacturer=1" /oem/app/fyt.prop

5. Copy firmware from step 1, updated config.txt from step 3, and updated /lsec_updatesh/7862lsec.sh from step 4, into blank USB drive. those files and folder should be in USB drive root folder.

config.txt
6315_1.zip (firmware)
AllAppUpdate.bin (softwares)
Isec6315update (for flash the firmware)
lsec_updatesh folder with 7862lsec.sh inside.
updatecfg.txt

6. Insert the USB into HU, The HU should auto detect the firmware update program. just confirm and let it do the work.
and that's it.

 

[hzn942]

Hi, I also flashed joying's firmware recently, what's the password for factory settings?

 

[hzn942]

I've tried 3368 and 126 and a bunch of other password.. no luck

 

[hzn942]

to your question, you can set smallest width in developer settings, this will change dpi for all apps. For CarPlay I think the dpi might be fixed, it’s supposed to look this way. Not sure if you can really change it.

 

[werther041]

to your question, you can set smallest width in developer settings, this will change dpi for all apps. For CarPlay I think the dpi might be fixed, it’s supposed to look this way. Not sure if you can really change it.

smallest width changed from 720p to 480p works great. finally I don't have to deal with tiny font-size. Thank you!

3368 works for me after flashed Joying's firmware. not sure why.

 

[hzn942]

Finally figured out:

besides changing "ro.build.fytmanufacturer", "ro.fyt.uiid" also need to be set.

in my case, I have mekede m600s, I need to set:
ro.build.fytmanufacturer=116
ro.fyt.uiid=4

with these 2 parameters set, then 3368 works for me.