yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S22 Ultra] Village_Idiot:
Try rebooting your phone into recovery mode and clear the cache partition then connect again. If that doesn't work, try turning off your WiFi on your phone; a WiFi network is not needed to use DeX or Smart Mirror.
[Samsung Galaxy S22 Ultra] ofthebull:
Snapdragon S22U Verizon
[Samsung Galaxy S22 Ultra] ffp.:
I already tried clearing cache and dalvik in twrp.

Just tried without wifi on and got the same message.

How can I make Dex "forget" my TV without formating my phone?
[Samsung Galaxy S22 Ultra] Village_Idiot:
Try connecting to your TV via Smart Mirror. Based on your OP, it works on your PC and it works on your tablet, but not your TV. It seems to be the TV end, not the phone end. You should be able to clear out the devices your TV. If not, then try factory resetting your TV.

You also try cold rebooting your TV.

How to discharge or cold boot your Samsung TV

When your TV is not working properly, it could be the product of a strange glitch caused by a residual electric charge. This guide will show you how to discharge your TV.

www.samsung.com
[Samsung Galaxy S22 Ultra] ffp.:
Smart mirror gets the same problem.

The phone-pc works. Phone-tv doesn't .

However tablet-tv works, that is whats weird...

I thought it was a TV issue, but it works with my tablet, so idk what is.

Already tried factory resetting tv, didn't work. Also tried removing from power socket. Gonna try cold reboot with the remote, but I don't expect this to work.

I was asking how to make Dex app from the phone to "forget" the TV, but idk how.
[Samsung Galaxy S22 Ultra] Village_Idiot:
I don't think there is a way to make DeX "forget" the TV. I don't think DeX actually "remembers," nor cares about what it is connecting to. It only cares if the connecting device is compatible with it.

Since you are getting the same issue with Smart Mirror, it still leads me to believe it is the TV end.

Do you have access to a different smart TV? If so, try connecting to that one and see what happens.

If Link to Windows is turned on, turn it off.

Unfortunately, I can't replicate the problem. I have an older 2016 Samsung smart TV and I have no issues connecting with DeX or Smart Mirror. I've also connected to my 5 year old Samsung smart 4K BD player, and 6 year old Sony smart BD player.
[Samsung Galaxy S22 Ultra] ffp.:
I think it's on the TV end as well. But why does it work with my tablet?

I don't have another TV to test, just my PC. I have in total 4 devices with Dex: PC, TV, phone and tablet.

Dex seems to remeber because it says "previously connected" under the TV name.

Is there any way to get a log to see whats causing this issue? Idk how to filter the logcat for this situation.
[Samsung Galaxy S22 Ultra] Village_Idiot:
Ok. I THINK I found out how to clear DeX's settings.

Go to Settings -> Apps

Tap the sort icon to the right of Your Apps.

Toggle Show system apps on and tap ok.

Scroll down until you find:

Samsung DeX

Samsung DeX home

Samsung DeX System UI

From there you can clear cache and data. Caveat to this. You can clear cache and data on Samsung DeX Home, but only clear cache on Samsung DeX and Samsung DeX System UI.

Let me know if that works.

Update: I just cleared cache and data on Samsung DeX Home and cleared the cache on Samsung DeX and Samsung DeX System UI. When I turned on DeX all my devices were cleared. It was just like I turned it on for the first time.
[Samsung Galaxy S22 Ultra] ffp.:
I didn't think of clearing all 3 apps. This worked for making Dex forget and force a new conection.

However, i still get disconnected with that message...

What can i filter in logcat to try to discover whats happening?
[Samsung Galaxy S22 Ultra] Village_Idiot:
That I don't know. It would be so much easier if you had access to another TV.

This may sound like it's coming from left field. Is Link to Windows turned on? If so, turn it off. Link to Windows has caused me problems. It wouldn't let me turn DeX on at all.
[Samsung Galaxy S22 Ultra] ffp.:
It's turned off. I just cleared samsung Dex data and my phone from Tv to connect as if for the first time and got the same result.

I think the app is called desktoplauncher. Here's the log

View attachment 5647491

I'm not sure is this ine, though.
[Samsung Galaxy S22 Ultra] Rubby1025:
I would recommend checking to make sure your TV's firmware is up to date on Samsung's web site.
[Samsung Galaxy S22 Ultra] Village_Idiot:
I'm not going to lie. I don't know what I'm looking for in that log file.

Are you running a VPN?
[Samsung Galaxy S22 Ultra] Village_Idiot:
I did a little research last night and found out that VPN can cause problems. I tested it out this morning. Here are my results:

S22 Ultra (WiFi On, VPN Off) -> Samsung TV - Connected no issues

S22 Ultra (WiFi Off, VPN Off) -> Samsung TV - Connected no issues

S22 Ultra (WiFi On, VPN On) -> Samsung TV - Connected, then disconnected. TV gave error

S22 Ultra (WiFi Off, VPN On) -> Samsung TV - Connected, then disconnected. TV gave error

Both errors were too fast to read.

If you are running a VPN, turn it off and try it.
[Samsung Galaxy S22 Ultra] ffp.:
Well, i have a vpn app, but Im not using it. I also tried truning AdAway off. Same issue.

Maybe some router setting? But then, why my tablet can conect to tv?
[Samsung Galaxy S22 Ultra] Village_Idiot:
I don't think it is a router setting, but it won't hurt to check. If it was a router setting, then it should have worked with the phone's WiFi turned off. Somthing is not letting the wireless traffic go through properly. It could be an app on the phone or on the TV.

Do you have Developer options enabled? If so, did you make any changes from the default settings? In particular the WiFi settings.

I did find this. But it doesn't seem right. You don't need a WiFi network for DeX to connect to a smart TV or monitor. That I have already stated and shown.

SOLVED- S22 Ultra- Samsung Dex failing on LG TV- Note 10+ always worked

I am definitely not in love with my new S22 Ultra and have been delaying sending in my Note 10+ trade in as it never gave me any issues. I guess newer is not always better! The most frustrating problem I have is with using Samsung Dex on my S22 Ultra to broadcast from my phone to my LG TV. I...

r1.community.samsung.com

You can give it a try though. Make sure your TV and phone are on the same GHz band and try. In this case, it was the 2.4GHz band.
[Samsung Galaxy S22 Ultra] ffp.:
I have developer setting unlocked and had wifi settings on. Tried turning all off and rebooting. Still have the issue.

Also tried connecting the TV and phone in same frequency 2.4 GHz amd 5GHz. Didn't work for both.

I went to the mall today and tried to connect to a samsung tv in a store. After granting permission from the tv, got the same error.

So, it seems it's some setting or app in my phone indeed.
[Samsung Galaxy S22 Ultra] raul6:
Is it stock rom you are using or some other rom?
[Samsung Galaxy S22 Ultra] Village_Idiot:
I'm stock too. S22 Ultra US (Verizon) stock ROM, Android 12 w/June security patch, not rooted. Microsoft Launcher is my launcher. I am assuming you are using OneUI as your launcher...
[Samsung Galaxy S22 Ultra] ffp.:
I'm on stock, but rooted with magisk and with TWRP.
[Samsung Galaxy S22 Ultra] Village_Idiot:
Did it work before you rooted? Or after? I THINK, DeX needs Knox. I'm not sure though.

I found this thread. It is in the Z-Fold 3 forums. The fourth post in this thread seems to explain what is happening.

https://xdaforums.com/t/root-and-dex-simple-question.4385671/
[Samsung Galaxy S22 Ultra] ffp.:
Oh, i can't remember if it was rooted then. I can try to factory reset, but it's a pain to transfer Gb and Gb of files again from backups.

From the thread you quote, it seema the issue is in one of the steps of twrp installation. I'm not sure the ultra would have the same problem. Gonna ask in twrp thread, thanks!
[Samsung Galaxy S22 Ultra] Village_Idiot:
I'm confident that the problem is caused from rooting. I haven't rooted in years and I am not smart on twrp. The twrp experts can help you better than I can.

Good luck. I hope you get it fixed without having to factory reset.
[Samsung Galaxy S22 Ultra] vlubosh:
This helped me with screen mirroring on rooted exy
[Samsung Galaxy S22 Ultra] ffp.:
Yes! Thank you so much. It worked!

Both smart view and Samsung Dex!
[Samsung Galaxy S22 Ultra] Nishanth22:
Can I flash this in Magisk? I dont have TWRP installed
[Samsung Galaxy S22 Ultra] Nishanth22:
Thank u sooo mucchhh!!!! It worked by flashing in Magisk
[FYT Android Head Units] iionas:
Hi gents and ladieas alike,

Recently I purchased a unit with the info

its a 4gb 8core with 32gb of storage.

Iam extremely new to this and Im yet to figure out what certain things mean so please be gentle

1. Is there any mods worth doing?

2. Is there any better firmware to flash/use to make this unit 'better'

3. I have changed to nova launcher and it seems to be snappier, any questions here?

4. What can I use to re-program buttons on my steering wheel? What it comes with doesnt seem to work.

5. Its actually android 10, not 11, its spoofed I checked.

The Device manufacturer is SPRD

Any help would be greatful!

Thanks in advance
[FYT Android Head Units] iionas:
View attachment 5646577
[FYT Android Head Units] surfer63:
It's a FYT unit. Any firmware from a FYT reseller can be used be it for uis7862 or uis8581A. The 8581A is simply the "lighter" less poweful brother of the uis7862. There are some minimal tweaks you have to apply and the lsecupdate binary is different. Of course, if you find a real uis8581firmware it might be better.

1. Only if you have problems, go for a mod.

2. If you do not even know the brand/reseller of your unit, how can anyone advice for better firmware? Next to that: 98% of the firmware for FYT units is identical. Only some differences in "theme" for the launcher (but you use Nova anyway). Your app firmware is of December 2021. There is newer available, but that means it will wipe your system. So far I only flashed newer kernels (read the uis7862 Q&A, etc. thread) hoping they patched the kernel with Android bugfixes and security improvments in the newer kernels, and keep the rest as it is (no AllAppUpdate.bin), thereby also keeping all my settings and 3rd party apps. Again: If you don't encounter errors, there is no need for other firmware. Note: do not flash T'eyes firmware. It is not bad but it does contain quite some restricted firmware making your unit perform much worse.

3. I use Nova as well and I am happy with it. No questions here :)

4. Do you have a CAN-bus? if so, they are hard-coded and you can't reprogram them unless you use something like my "FYT HW OneKey" app that lets you reprogram part of the buttons.

5. That's correct. The android level is determined by the SDK. The Android version setting (for easy version status) is nothing more than a property and can just as easily be set (or faked) to 17, 31 or 145, etc..
[FYT Android Head Units] iionas:
Wow thanks for the reply mate you're an absolute damn legend

I'm quite ok with how it functions I don't have any said errors or problems. Good to know some of this info really I mean it thanks again.

Mine is faked however I don't really mind or care I didn't think the components would have been able to power this soc!

I don't have any functions for a cheap Chinese thing it does it job with Waze and music. And occasionally YouTube for a podcast.

Yes sir I do have canbus so I'll be looking for that tool asap. I wanted to reprogram a button for Spotify next song. Nothing special!

Is there ever a time where I should be updating the firmware at all? Like sau year down the track? Or do they stop servicing them?

I was hoping there was a hal9k mod for this one too but I lucked out there
[FYT Android Head Units] surfer63:
In the settings you can reverse next-previous and/or Vol-Up/Vol-Down if your app/system reacts the other way round, like Spotify does for example. You do not need my app for that.

Like said: so far I have only updated the kernel (6513_1.zip) and nothing else. I only use the unit for navigation, radio and music. Note though that those FYTs still contain an error where they erase your Google contacts if you sync them. It seems the latest T'eyes/Joying firmware doesn't do that anymore, which als means that the somewhat slower resellers like Mekede etcetera should follow soon. (but I don't call from my car. Maybe twice a year)

All those mods are for MTCD/E models, not for FYT.

The only FYT mod is made by @gordgelin but only for real T'eyes models (like mentioned :some T'eyes stuff only works if you have a T'eyes id on your unit).

Tyukta at 4pda makes "a best of" mod where he simply takes the latest kernel and combines it with (what he considers) the best apps (themes actually) from other firmwares (the AllAppUpdate.bin) and he himself also does some theming to apps.
[FYT Android Head Units] iionas:
Cool well thats pretty straight forward I dont have any issues with it, so Ill be leaving it for now and just using your tool for re-programming buttons.

The infamous google contact deletion happened to me, i managed to restore which is really good, however it was annoying. It would of been really good if the google phone app would of worked with it over BT, but it does require a sim (the unit goes support 4g however i dont use a sim).

Ill be ready over the guides today to see for your tools
[FYT Android Head Units] Adik Orazov:
Hi Gentlemen,

I bought same FYT few days back, succeeded with installation to old MB w211. However i faced problem with Bluetooth connection. It seems like Bluetooth driver or module in head unit is not working properly. I tried to reset factory settings, but still have issue with Bluetooth connection.

Could you please be so kind and share your advice on that. Maybe firmware update is required, but i don't know where to find it out.

I would really appreciate your assistance. Sorry for my English, i am not native speakers.

Thanks in advance Gentlemen.
[FYT Android Head Units] bryanlpx:
Hi, is anyone willing to share about what kernel to download? And my Bluetooth is not working recently and shows “null”. Help!!! My android SDK29
[FYT Android Head Units] saifulmly:
how to get the firmware for this unit.
[FYT Android Head Units] saifulmly:
how to get the firmware for this unit.

Uis8581A
[FYT Android Head Units] marchnz:
One reviews forum or contacts seller.
[FYT Android Head Units] surfer63:
This unit? Which unit?

That is like: "My phone has a snapdragon-750 cpu". Which firmware should I download?

(select about 25 brands with 200+ models).

Be more specific.
[FYT Android Head Units] skippyd:
I have a k4811 (8581) and was wondering if there is a way to fix adb to make it work? enabling it in dev options does nothing (the device isn't detected when a laptop is plugged in to USB and adb wifi also rejects connections).... will the FYT MC app work on this device? ex. root button?
[FYT Android Head Units] fabius12:
Hello everyone, I bought a UIS8581A and I also have problems with bluetooth where I can't connect my ELM327 adapter because I can't even open the bluetooth settings to do so.

The salesman who sold me the radio can't help me right now. Can anyone help me?

Otherwise I have to return the radio to the seller
[FYT Android Head Units] j0hn83:
You should have an app called "Bluetooth" (not inside settings, but an actual preinstalled app).

What happens when you open the Bluetooth app?
[FYT Android Head Units] fabius12:
I continue the discussion here which talks about my problem with the OBD module

https://xdaforums.com/t/obd-over-wifi-and-the-internet.4537553/#post-88254567
[FYT Android Head Units] fabius12:
Yesterday I tried to pair by changing the radio name, password and all the craziest tests I could think of but nothing.

My bluetooth screen is the first photo I attach

When I try to connect one of my three working ELM327 minis, nothing happens, I touch the symbol of the chain to connect, it asks me for the pin of the ELM module, I insert it (it is 1234), after a few seconds a message appears "pairing succeeded". But that's not true, because the chain symbol doesn't change, in Torque I don't see the module (try various versions of torque) and I can repeat the bluetooth pairing indefinitely but it never works.

Any app I use for bluettoth tells me that bluetooth is not working or can't be turned on. But if I connect a smartphone it works.

I do not know what to do

Anyone can help me?

Whats App Image 2023 03 08 at 10 49 16 — Postimages

postimg.cc
[FYT Android Head Units] S2artb:
I am trying to understand what is happening with my bricked UIS8581A unit.

I flashed the wrong FW. It appears to be completely dead apart from feeling warmth on the rear of the unit when I add power to yellow and red (power and acc) wires while it is grounded (black). I have an update.zip (1.2GB) and a full firmware (3.6GB) from the seller.

The part I am wishing to understand is this:

With the full FW uncompressed in an update folder on a USB stick's root, plugged into the 4pin usb port on the unit, I power the unit on and there is no indication of the USB stick being accessed (red LED on USB stick not lit). I have a USB-A to USB-A cable plugged into the second USB port (6 pin). When I plug the other end of the male to male USB into my laptop (up to date USB drivers installed) that is powered on, the USB stick's LED begins to flash as indication it is being accessed. The LED remains lit for several minutes and then begins to flash (appears to be random flashes). After about 20-30 minutes the USB's LED flashes in a repeating pattern. I have left this USB stick continue whatever it is doing for hours. After disconnecting the laptop from the USB, disconnecting the USB stick, and cycling the power to the unit, the unit is still bricked. Plugging the USB stick back into the 4 pin USB port (with power on), the USB's LED remains unlit indicating it is not being accessed still. Recycling the power to the unit does nothing. Only when I re-connect the USB-A to USB-A cable from the unit to my laptop the USB stick is accessed. Disconnecting the cable, the LED turns off. This is the only life I have witnessed since bricking the unit.

I am wondering why the USB is indicating it is being accessed, only when connected to my laptop.

Does anyone know what is going on here when I connect the unit with my laptop and the USB's LED indicates it is being accessed?

Please don't reply, unless you have specific knowledge.

To all who don't reply, thank you for not wasting my time! It is appreciated...
[FYT Android Head Units] mastrv:
@S2artb What comes to mind is how you are resetting your unit. I'm not sure if this will work and/or if this applies to your unit. There is a reset hole in the top left of the display. I'm not sure of the exact sequence, but you can try that. Search this or the forum that applies to your unit, if this forum doesn't apply to yours.
[FYT Android Head Units] surfer63:
Do not connect your unit with the laptop. This will not help at all.

Which unit do you have? This is the FYT forum and there are many UIS8581A units that are not FYT.

Which wrong firmware did you use?

You tell us absolutely nothing that we need to help you.
[FYT Android Head Units] S2artb:
This is not what I am asking. I understand you don’t understand why the usb is being accessed. I am familiar with the reset combos. This forum is exactly where I need to post…

Thanks for your input…
[FYT Android Head Units] S2artb:
I see you don’t understand why the usb is being accessed as well.

Thanks anyway…
[FYT Android Head Units] surfer63:
No, I don't understand why you are even trying it. This is not how FYTs work. This is how (for example) TopWays work.

Next to that you mention: "I have an update.zip (1.6GB) and a full firmware (3.6GB) from the seller."

All FYT firmwares are around 1.2 to 1.5 GB.

A 3.6GB full firmware means that it is absolutely not a FYT.
[FYT Android Head Units] mastrv:
Have you read any threads in this forum?
[FYT Android Head Units] S2artb:
Help with what exactly..? Help me understand? I understand this is the wrong thread for getting help with fixing my bricked unit. This is not what I posted for.

Perhaps my post is not clear.

I was seeking understanding about why my usb stick is being accessed.

Not many threads on here about UIS8581A. With senior members chiming in here, I felt, someone may be able to shed light on 'why the usb is being accessed'.

Now I know this website is not the place to seek understanding...

______

Edited by SyCoREAPER
[FYT Android Head Units] j0hn83:
Someone may be able to shed some light, but not in THIS section of the forum.

You were asked specific questions to determine if you were asking questions in the correct section of the forum.

You chose not to answer those questions instead demanding we answer your questions.

Our responses will not be relevant to you. Your unit despite being a UIS8581A it is not manufactured by FYT and you are posting in the FYT sub forum.

TopWay (likely your unit) and FYT units even with the same processors work very different and we don't know about the behaviour of the USB on your unit.

Your question would be best answered in the correct sub forum here: Android Head Units
[FYT Android Head Units] Tahvaja:
Hi all! I posted this to another section already. I guess this would have been the right thread. So as a new FYT (UIS8581A) owner I have some questions.

1. The radio seems to lack AF functionality and I have to manually tune the stations when I'm on longer rides. Is there anything to do about it?

2. Wi-fi is not turned on when the unit/car starts. So I have to manually turn it on and connect to the iPhone hotspot every time. Is there a way to force the wifi to stay on, other than the option in the settings which is already ticked?

3. The audio quality is ****ty even with the external mic that came with the unit. I've tried every setting to make it better. Any ideas?
[FYT Android Head Units] NattaM:
How to contact you ? I have same situation with uis8581a
[FYT Android Head Units] surfer63:
Post your system info here. If your unit doesn't work anymore give us a link where you pruchased it (aliexpress, amazon, etc.)
[FYT Android Head Units] mastrv:
@NattaM Could be an app. Did you install something relatively recently?

For example Poweramp has a setting to rescan library on startup. I found this while trying to figure out why my cpu usage was high for a while after startup.

What is plugged into usb?

Why are you asking about this? How did you determine it's a usb issue or usb is being accessed?

I've also seen this when a usb stick is going bad or is bad. Also when operating system is checking usb stick file system.
[FYT Android Head Units] NattaM:
this is my thread https://xdaforums.com/t/uis-8581a-4gb-64gb-f2-8core-4g-wifi.4608985/

@mastrv
[FYT Android Head Units] surfer63:
I am quite sure they sent you the wrong lcdconfig file.

It means that your unit does boot, but as the screen does nothing anymore, it seems it is dead.

Do you still have an original system Info photo/image from your screen? Showing kernel; platform:, touch:, panel:, etcerera?

If you have an original photo of your system mentioning the panel (like for example showing "L10P8-MIPI-etcetera" or "L10P8-LVDS_1280x720-etcetera"), I am pretty sure we can restore your unit.

Next to that: Did you already connect it to your home network or phone hotspot? Check if it still connects. That means it is up and running, but simply can't display anything.
[FYT Android Head Units] NattaM:
I will try to connect with hotspot and see if it connects. Anyway unfortunately I have no info about firmware, kernel or other . if the only way to recover it is that I can try to ask the seller for it with another aliexpress account. i have only the ui screen of the unit.
[FYT Android Head Units] surfer63:
Can you remember whether it is a standard screen or a MIPI screen?

Can you share the lcdconfig that the reseller gave you?