AC8257 CPU Based unit's problems & questions - Couldn't find any info about it

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xin99

Member
Aug 2, 2011
24
3
Thanks, perhaps it is better to install UI17/20 on 3 split screen package.

There is a problem of UI17/20 with normal package when 360 camera system installed, i.e, When reversing, the rear view screen of the 360 system occasionally does not display.

I will try to install the 3 split screen package next time, to observe if the problem still exists.
I installed latest version of UI20 in xyauto site(June 1). After 2 day of testing, It seems the problem of 360 was solved.
So I need not to test the 3 split screen base package.
 
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howardc64

Senior Member
Apr 30, 2016
552
132
Home, return and volume buttons on the left side under mic and reset, don't respond. How to assign?

These buttons are assigned automatically in the booting progress.
Reboot the HU may help.

Yes, I also encountered various UI issues after format+flash and took a few reboots and resolve.

I recall there is a menu to set actions to the icon touch actions.

Also touch zones for these icons shifted in my case requiring calibration

 

replay-R

Member
Jul 9, 2010
21
4
I am on 1.73.8 and sometimes the volume buttons don't work. The a/c controls don't work. as if the canbus is not correct. few minutes (10-20) later it would go back to normal and everything is ok. anyone else have a similar experience?
 

howardc64

Senior Member
Apr 30, 2016
552
132
I am on 1.73.8 and sometimes the volume buttons don't work. The a/c controls don't work. as if the canbus is not correct. few minutes (10-20) later it would go back to normal and everything is ok. anyone else have a similar experience?

My volume button on HU felt intermittent after 1.73.8 flashing upgrade. Turns out the touch zone changed and required recalibration. Try touching above and below to see if can get more deterministic behavior.

 

replay-R

Member
Jul 9, 2010
21
4
My volume button on HU felt intermittent after 1.73.8 flashing upgrade. Turns out the touch zone changed and required recalibration. Try touching above and below to see if can get more deterministic behavior.

Sorry I was not very clear on my post. I was referring to the volume keys on the steering wheel. Pressing volume up or down normally would bring a graphical slider on screen that moves up or down. This does not show up during these early minutes of starting the HU. I can change the volume on the touch screen alright.
Trying to control the A/C by touching the screen has no effect. If I go to settings and reload the canbus for my car again everything works fine. Until the next time I start the car!
 

howardc64

Senior Member
Apr 30, 2016
552
132
Sorry I was not very clear on my post. I was referring to the volume keys on the steering wheel. Pressing volume up or down normally would bring a graphical slider on screen that moves up or down. This does not show up during these early minutes of starting the HU. I can change the volume on the touch screen alright.
Trying to control the A/C by touching the screen has no effect. If I go to settings and reload the canbus for my car again everything works fine. Until the next time I start the car!

ah ok, xyauto seems to be changing CANBUS software often in last 1/2 year of releases. Maybe to add more CANBUS decoder modules?

I guess can flash back to older 1.73.7 to check if new bug. Flash is a bit of work of course :)
 

augustinionut

Senior Member
Apr 21, 2015
1,639
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howardc64

Senior Member
Apr 30, 2016
552
132

file date shows this is 2023/05/11. The one I gave you to install in post #1844 is 2023/06/01 so its newer.

Directory name says the newer one is "three-split-screen" I don't know the meaning. UI17/UI20 works with both firmware. Maybe three-split-screen is related to HU's split screen feature (I tried 2 split screen before but don't use it)

2023/05/11 file also don't have computer flash file so the ota file can only be used to USB upgrade an HU with 1.73.8 already installed.
 
Jun 9, 2023
11
0
You need a usb in fat32 with the display driver and the auto update file, connect it, turn on the head unit , when you see light press the reset button, when black screen let 1-3 seconds and press and hold reset button again for 30 seconds (must have black screen while holding), let the screen turn on and show light again and wait till autorestart (2-5 minutes) with the usb connected, when the screen restart alone again disconnect the usb and voilá, your head unit is working again!

if you want to flash it say to me in private message and i will help you by teamviewer or telegram vídeocall, don’t worry about.. your head unit will work again without problem, that’s because we are here!

PS: this driver is specific for 1024x768 and there are 3 more for this resolution, if you need another one for this resolution or for another resolution.. i’m here!
I have the same problem. can you give me for attached screen. please please
 

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howardc64

Senior Member
Apr 30, 2016
552
132
I have the same problem. can you give me for attached screen. please please

What do you mean you have same problem? Did you install UI with wrong resolution and bricked display? If so @mantecon1 explained to me this is how to recover from brick with wrong display driver


If you have other brick problem, then please explain more detail.
 
Jun 9, 2023
11
0
You need a usb in fat32 with the display driver and the auto update file, connect it, turn on the head unit , when you see light press the reset button, when black screen let 1-3 seconds and press and hold reset button again for 30 seconds (must have black screen while holding), let the screen turn on and show light again and wait till autorestart (2-5 minutes) with the usb connected, when the screen restart alone again disconnect the usb and voilá, your head unit is working again!

if you want to flash it say to me in private message and i will help you by teamviewer or telegram vídeocall, don’t worry about.. your head unit will work again without problem, that’s because we are here!

PS: this driver is specific for 1024x768 and there are 3 more for this resolution, if you need another one for this resolution or for another resolution.. i’m here!
What do you mean you have same problem? Did you install UI with wrong resolution and bricked display? If so @mantecon1 explained to me this is how to recover from brick with wrong display driver

https://sites.google.com/view/yt5760bac8259/brick-recovery?authuser=0#h.c71g2axyx89p

If you have other brick problem, then please explain more detail.
Yes I install
What do you mean you have same problem? Did you install UI with wrong resolution and bricked display? If so @mantecon1 explained to me this is how to recover from brick with wrong display driver


If you have other brick problem, then please explain more detail.
yes I have installed with wrong resolution. and now I need
You need a usb in fat32 with the display driver and the auto update file, connect it, turn on the head unit , when you see light press the reset button, when black screen let 1-3 seconds and press and hold reset button again for 30 seconds (must have black screen while holding), let the screen turn on and show light again and wait till autorestart (2-5 minutes) with the usb connected, when the screen restart alone again disconnect the usb and voilá, your head unit is working again!

if you want to flash it say to me in private message and i will help you by teamviewer or telegram vídeocall, don’t worry about.. your head unit will work again without problem, that’s because we are here!

PS: this driver is specific for 1024x768 and there are 3 more for this resolution, if you need another one for this resolution or for another resolution.. i’m here!
 
Jun 9, 2023
11
0
What do you mean you have same problem? Did you install UI with wrong resolution and bricked display? If so @mantecon1 explained to me this is how to recover from brick with wrong display driver


If you have other brick problem, then please explain more detail.
I have installed UI with wrong resolution and I have bricked display. now I need for correct resolution files.Attached my multimedia info. Thanks
 

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howardc64

Senior Member
Apr 30, 2016
552
132
Yes I install

yes I have installed with wrong resolution. and now I need

For 1280x720 compatible UI to use for wrong display driver recovery. You can try UI17/UI20


Also read NOTE11 here. Thats also another possible 1280x720 display driver to use

 

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  • 2
    How did you install it? Thanks
    if you have 1.73.8 running, you can use spflashtool to flash the boot.img( it's patched with magisk, so it's rooted). Then install magisk.apk in android, run it, it will nag for a reboot, so reboot. Then install the v4a.apk (viper4android apk). Then start up magisk and install the v4a.zip(viper4android magisk module) as a module. Then reboot, then run viper4android app and turn legace mode on. Then setup viper4android.

    As extra( for me i don't know if it sounded better, maybe yes, but it had less base) you can flash another viper4android module zip file in magisk. Choose either module for the sound as you like.

    grtz
    2
    So I've risked it and updated my YT7260B Unit to 1.37.8. Thankfully I've studied a lot around here before attempting it:

    IMG_20230924_161358.jpg


    Basically I've dealt with all the issues already predicted by howardc64. Great work m8:
    1. Missing preloader.bin. Found it in the most recent OTA for my Unit.
    2. Missing logo/metadata. Got them from here.
    3. Bricked screen. Used XYAUTO_UPDATE.bin and the gongban_YT57_sat9707-v1.73.8_77e06f22_ota.tar this and got it fixed. Attaching both just in case XYAuto deletes them. Great catch.
    4. Then, as predicted I had the dimensions (XY) reverted. I've rotated my five fingers and calibrated the screen. I've also fixed the left "buttons" there. Super useful post and video.
    5. I Don't have the IMEI issue as I didn't get the one with an embedded modem.
    Now, the only thing that's irritating me is that I've lost logo/animations. I've put a nice "Ford" there on boot and now I can only have the default "Android":

    IMG_20230924_161605.jpg



    Any ideas? xD
    1
    root it with this. First install twrp, then rename magisk.apk to magisk.zip, put it on a usb stick and flash it with twrp. To get into twrp, download terminal emulator and type "reboot recovery" in the emulator.
    1
    here the files to get better sound on the 5760b.
    1
    How to use that file? How to apply it? I already have 1.73.8
    Put it in a readable USB and go do an Android update (car settings, system info).
  • 4
    i did it !!! i did it !!! my radio works!! to much people with this problem and i found the solution trying bored files from xygala, i was bored, i downloaded all the files in that drive 1 by 1.. seems it’s a driver for lg screens, i will edit this to make a tutorial, but i need help to do it, my english is not so good
    3
    Late Feb release of an xyauto UI is pretty good. Has maps (I use with google maps app with offline maps), radio, HU music player, a fixed app launch icon pane (left vertical) and a user changeable app launch icon pane (lower bottom) all on one screen.

    Generally quite nice. google maps has voice input search, auto dark mode at night while navigating (none navigation mode unfortunately stays in day mode) map will be always north up while driving without navigation route.

    Screenshot_20220429-113525.pngScreenshot_20220502-172333.pngScreenshot_20220502-212853.png

    patch file link Note this seems to be for 1024x600 screen only. Didn't see it in other resolution folders.

    Mode switching is a bit mysterious (I have a steering wheel button programmed to switch modes). In the old default UI, mode switch with switch between currently running apps. Seems to do nothing on this UI while being displayed.

    This launcher provide everything I use so no need to fiddle with the HU much. Just power on the car and drive. The useful features are

    - FM radio (wife listens to this and its her car)

    - Maps always displayed and track your position smoothly (Seen other launchers with map. Position only update every second or so, very jerky display). Google maps fixed to north up unless navigating. Voice input destination via mic icon on google maps search bar. Maps always in bright color mode (quite bright at night but area is not entire screen) Navigation will auto change to dark mode at night.

    - BT works if setup to auto pair. Incoming calls pops up on screen. Can voice command out going calls with iPhone easily. Just say "siri call xxx" with iPhone mic able to hear you. iPhone looks up your contact and dials while connecting to HU's BT for speaker/mic sound.

    - Music player will play all music files in the system/USB stick.

    - Color choices are nice. Colorful but background is dim for night time use. Only issue is google maps none navigation mode display stays bright. Other nav software might handle this better.

    - Google maps generally likes portrait displays like a phone. This horizontal smaller window sometimes hide the next driving intersection change behind the green direction box on top. Not too big of a problem.

    - Left column icons are not changeable. Bottom row is user changeable.
    3
    I have recorder a video with the YT5760B system upgrade. It takes about 5 minutes to complete. In the attached ZIP file you can find the video.
    3
    You might need to reinstall 1.73.7 to recover matching zlink version. Not sure anyone who knows how to extract apks still hang out on this thread.
    I managed to extract all the apks from 1.73.7.
    Strangely. I couldn't find zlink.apk.
    There is ZlinkActivationCode.apk, which is the only apk related to zlink.

    -------------------------------------------------------------

    Update!
    Finally found the zlink apk. it was inside the vendor.new.dat.br.
    I have uploaded zlink apk here, just in case someone needs it.
    I believe this is the zlink ver 3.9.27 comes from the 1.73.7 firmware.
    I haven't got chance to test it on my HU (now is midnight here in Australia), will do it tomorrow.
    3
    Is it wiping user data as 1.73.3?

    Just installed 1.73.6 on 5760B 1024*600, didn't wipe user data.

    Actually, I forgot and left 1.73.3 (don't recall if it was 5/24 or 7/25 version) on the USB stick w/1.73.6 and 1.73.3 got installed which wiped my user data. But then I installed 1.73.6 over this without wiping user data.

    Biggest change I notice is just the 2x boot up pop sound is gone. So maybe xyauto have more orderly sound hardware initialization now :)