[Android Head-Units] pctjune:
Hello

I finally upgraded my Junsun V1 Pro 4G/64G from v51 to v94, I am looking for improvment in FM Radio reception and want also to test Carletter.

Everything went right and I only loose my stored FM Radio : boot logo, rear radars, camera and BT settings were still there. I just need to resintall Agama and Musicolet.

I will test FM Radio soon.

For CarPlay, I successfully run AutoLink (will check any improvment as I moved from 2.0.19 to 2.0.25), but when I try CarLetter, it's not activated and I only got the below screen. I have Internet access on my device through my phone. I do not know what is CarLetter activation tool and QR code does not work : how to activated it ?

Thanks

EDIT : so I did some reading of posts since this summer when Carletter appeared in v90.

Apparently, I am not the only one to have Carletter activation problem and it seems difficult to have both Autolink and Carletter activated.

My goal is to have latest firmware for FM radio and be able to test both Autolink and Carletter for CarPlay.

Some infos I noticed :

Meeyo : "Yep, CarLetter only activated, i think just the one installed at 1st boot is activated by default."

Junsun V1 Pro (MTK8259/MTK8257) - firmware

Latest version for Junsun V1 Pro MTK825X 8259P_军灿UI02v1280x720-国外_v113_20231122.zip-Tan.zip https://drive.google.com/file/d/1aONift9n_jHn3HYpfaZZ6CLDAjziIPmm/view 8259P_军灿UI02v1280x720-国外_v107_20230919...

xdaforums.com

Question : correct ? If you do a fresh install (ot an update), will it be then possible to go from Autolink to Carletter for example ?

TorstenH : "To avoid confusion, it's getting more and more important to differentiate between "CarLetter" and "AutoLink".

Both apps are "pre-installed" (don't want to go into technical details here) and can be enabled via the factory settings (code 8878, section Others). In factory settings AutoLink is labeled as "Suding".

Junsun V1 Pro (MTK8259/MTK8257) - firmware

Latest version for Junsun V1 Pro MTK825X 8259P_军灿UI02v1280x720-国外_v113_20231122.zip-Tan.zip https://drive.google.com/file/d/1aONift9n_jHn3HYpfaZZ6CLDAjziIPmm/view 8259P_军灿UI02v1280x720-国外_v107_20230919...

xdaforums.com

TorstenH : "Codes for AutoLink can be bought by Junsun on Aliexpress. The license gets stored on a separate partition and survives firmware updates.

The license is valid for Android Auto (wired and wireless) or CarPlay, whereby CarPlay wireless is a separate licence."

Junsun V1 Pro (MTK8259/MTK8257) - firmware

Latest version for Junsun V1 Pro MTK825X 8259P_军灿UI02v1280x720-国外_v113_20231122.zip-Tan.zip https://drive.google.com/file/d/1aONift9n_jHn3HYpfaZZ6CLDAjziIPmm/view 8259P_军灿UI02v1280x720-国外_v107_20230919...

xdaforums.com

Question : so if you do a fresh install (I do not know how to do it), is this the way to erase these separate partition and be able to select Carletter ? Is there a way to backup these licenses and copy it on a fresh install to have both software activated ?

TorstenH Carletter Installer :

https://xdaforums.com/t/junsun-v1-pro-mtk8259-mtk8257-firmware.4283365/post-88810243 (Last edited: Jul 30, 2023)

Question : is this now stable and working as it seems not been updated since Jul 30 th ?

So based on these readings above and others and to summerize :

1/ when you do a fresh install of firmware, both AutoLink and Carletter are pre installed. The first you use will be activated : correct or not ?

In my case, if I do a fresh install, then will it remove the Autolink license and activate Carletter if I choose it first time I configure the firmware onced installed ?

2/ from there, if you want to also use the one not choosed at point 1/ above, you need to :

- buy a license of the second software

- or installed either AutoLink or Carletter from TorstenH ?

So you then have both activated ?

3/ from there with the 2 licenses, if you update your firmware (and not a fresh install), will it therefore update both version and keep both license so you still have both activated ?