had my joying sofia for a couple of years now and it has started playing up in the last couple of months
first problem was the screen becoming non responsive, fixed by following the soldering video
second problem was the gps fix getting REALLY screwed up when using any sat nav app, I put it down to overheating issues so had to switch the unit off and use my phone instead. not ideal
most recent issue has started over last 10 days or so - when the car is switched off and the keys removed the unit display stays on for approx 5 - 10 mins. It has no response and cannot be used, no presses do anything and there is no sound but the display is still "live"
I must admit i'm not impressed with the joying but it seems to be the best of a bad bunch where android head units are concerned as it has the greater community support
can anybody help?
Firstly, which Intel Sofia model & software version is it ?
Have you fitted larger heatsinks & fan for the main processing module ? This is especially important where the unit is mounted directly in front of the car heater.
For the shutdown, re-check the Joying sleep mode settings.
I had a Joying Sofia unit in my car till a few days ago. It started to slowly die after doing quite fine for over 2 years. Before it really gets on my nerves, I took it out and replaced it temporarily with a Coika PX5 unit. Seems that yours also slowly wants to make itself redundant...
It is absolutely normal that the unit remains on for another 5 minutes after removing the key. Yes, there is no audio output, and the screen cannot be touched. But one can fully use the unit from remote, e.g. via TeamViewer. This is how I noticed.
What it usually does however: turn off the display so the user does not see the Android screen anymore. This is no more working with your unit.
I do not know a specific solution for your problem.
I would try reflashing the unit, both MCU and Android. You will end up with a fresh unit however, because all of the Joying sw updates always wiped away all user data.
pwood999 said:
Firstly, which Intel Sofia model & software version is it ?
Have you fitted larger heatsinks & fan for the main processing module ? This is especially important where the unit is mounted directly in front of the car heater.
For the shutdown, re-check the Joying sleep mode settings.
Click to expand...
Click to collapse
realzoulou said:
I had a Joying Sofia unit in my car till a few days ago. It started to slowly die after doing quite fine for over 2 years. Before it really gets on my nerves, I took it out and replaced it temporarily with a Coika PX5 unit. Seems that yours also slowly wants to make itself redundant...
It is absolutely normal that the unit remains on for another 5 minutes after removing the key. Yes, there is no audio output, and the screen cannot be touched. But one can fully use the unit from remote, e.g. via TeamViewer. This is how I noticed.
What it usually does however: turn off the display so the user does not see the Android screen anymore. This is no more working with your unit.
I do not know a specific solution for your problem.
I would try reflashing the unit, both MCU and Android. You will end up with a fresh unit however, because all of the Joying sw updates always wiped away all user data.
Click to expand...
Click to collapse
to clarify -
my unit is the JY-UL124N, purchased from german warehouse 14/03/17
for the last 2 years my joying has "gone to sleep" on the immediate removal of the keys, not only in my current vehicle but also in my previous one so I do not believe it has anything to do with sleep settings. The same problem occurs when I choose "switch off" from the pulldown menu
I do not intend to try and fit heatsinks/fans - I am of the opinion that should this unit need them then surely joying should have fitted them in the first place?
I do not believe it is "absolutely normal" for the display to stay on for 5 - 10 minutes when the keys are removed/switch off is chosen, it has never done it in 2 years of ownership, has only started to do it within the last 10 days and does not do it every time
I have reflashed the unit several times, both MCU and android. same problem
to be quite honest, this unit has never really done it for me anyway - after having read the countless problems other users have suffered/endured over the last couple of years I suppose I should count myself lucky that my unit has been relatively trouble free and the problems have only recently started to manifest themselves. In my own personal opinion joying have foisted a substandard unit on the public and then sat back while we all became unpaid beta testers for them - look at all the hard work surfer63 and others have done? for free as well I might add. I should have kept my parrot asteroid smart as it was a superb unit but then parrot dropped support for it and its apps with no prior warning hence my move across to joying
I cannot put up with this thing anymore, I have never liked the music player and radio tuner interfaces anyway - they are far too "busy" and distracting. The FM tuner does not work properly. The sound is poor. The bluetooth handsfree is terrible in that people cannot hear me properly during a phone conversation. The unit is and always has been incredibly slow and laggy. The music player has a really irritating problem in that it will always play the next track alphabetically, NOT the next track of the album I am listening to. The music player also cuts off the first second or two of every track it plays.
Please everybody be aware that I do not intend to turn this into a thread knocking joying, I am just voicing my opinion that after 2 years of ownership I have not been impressed with this thing so to that end this afternoon I bought a new alpine iLX-702D. I have had many alpine units in the past and know them to be quality reliable units. And the FM tuner RDS/AF will work, properly
Hello, everyone.
I bought a Dasaita 10.2" Android head unit for my Jeep about a year ago. Love the Android functionality. However, it's got some quirks. I am hoping someone can give me some guidance on them.
I'll start with (hopefully) the simplest:
1) Visualizers don't ever work. That's unfortunate, but such a large head unit with a nice screen. Is there a setting somewhere that might make them work?
2) Sometimes when I first start the vehicle, the default (and crappy) mp3 player starts up automatically. I never use it, but can't uninstall it. There must be a hidden setting somewhere that tells the unit to start this app, but I can't find it.
3) Someone said I could view the backup camera even when not backing up. I changed the settings like another thread said, or I thought I did, but I never get any video from the backup camera unless I'm actually in reverse.
4) Only about 3 times now, it has frozen when I back up, and when I am moving forward again, it still shows the last view, a frozen snapshot, from the backup camera. No controls work. It must be restarted to get that camera view off the screen.
5) I see firmware updates on XDA, but am not sure how to tell which one is for my device. I can't post a link to the one I bought from Amazon, but the description says this: "Dasaita 10.2 inch Large Screen Unviersal Double Din Car GPS Stereo 4G+32G OCTA-Core Chip For Jeep Wrangler 2015 2016 2017 With Blutooth Wifi Car Audio 8G Meomery Card"
6) 3 USB connectors, but only 1 seems to work. When I asked support about it, Quick said to use the one that works because it is "more stable." Is there another purpose for the other two?
7) I didn't use the external mic for Bluetooth, and although Bluetooth works and I can hear people fine, people complain every conversation that they can't hear me. Even if I'm sitting parked. I finally gave up on Bluetooth. Is the included mic a lot better? Apparently it's unusable for me as-is.
Overall, I love the functionality and can't imagine going back to a standard head unit. Would like to just fix these quirks. If you have a fix for any of them, please let me know!
Thanks,
Brian
During a recent sale at AliExpress, I ordered an Android headunit that replaces the factory screen for my 2016 B8.5 Audi. I ordered from the "Nunoo" store due to them listing a Snapdragon 665, and I ordered the supposed 8 GB/128 GB model for my MMI car.
https://www.aliexpress.us/item/3256805118631091.html
The unit hasn't shipped, so I messaged the store asking what's up and making sure that the order was going to fit my particular car (needed an Air Bag light relocation cable and AMI cable). I also asked to confirm it actually had the Qualcomm chip. The seller messaged me back saying that it would instead ship with a 8581 processor due to issues with the 665:
"The cpu will become 8581, because 665 CPU with some problem"
I'm getting sketchy vibes. Is there any hope that these units are worth messing with? Since ordering this, I've done some more reading around and see where Chinese sourced units often mis-report hardware, versions of OS's, etc.
I'm currently running an android box that attaches to the stock, non-touch screen in the car and allows for wireless Android Auto. It connects to Canbus and the MMI audio system, and is generally OK. It just has no touch screen, so I thought I'd upgrade. Should I bail on this order before they try to ship and look around for another seller?
Is there a Android head unit issues for dummies I should read to catch up on the state of these things?
Heya, the Listing only mentions an 8 Core Processor in the Pictures itself. It mentions the Snapdragon 665 Version down below but that is not selectable. I only know that because I myself just ordered one of those for my A6 4F MMI 2G. I had to search a bit for that Version. Just click a few different Listings on Aliexpress if you want that version.
I myself used an Android Head Unit in my Older A6 4B with a generic 8 Core CPU and that was more than enough Performance. it never had any lags or other things.
My Unit used an UIS7862, the 8581 seems to be a less powerful version of it. It could be Powerful enough to work without Lags but if you want to be really sure maybe search for reports of Headunits with the Spreadtrum UIS8581 CPU or try finding the Snapdragon 665 Version but be prepared that it's gonna be a whole lot more costly. And don't settle for the 625 Version, that is a pretty old CPU and all I could ever find about those Versions where lackluster performance and other issues
My unit finally shipped, so we'll see what I get.
Sweet, please report about that CPU Version Performance and stuff
It's sadly quite hard to find any Information about the Nunoo Headunits.
I'll try to keep this updated about the 665 Version that I just bought too
Well..... don't keep us in suspense.
Report back because i'm looking to buy a Nunoo 665 as well.
Sure, I put it in a couple of weeks ago. I did receive the 8581 chip version.
Some notes on use:
Install went about as expected, with the exception that to mount the included dash bezel that the screen attaches to over the old hole, you can only access two screws on the new mounting plate instead of 3...unless you want to drill into your original dash to pass the third screw. I doubt I do that as I want it to be reversable.
I did have problems with an ABS light. My car has the combo hazard button and passenger seat Air Bag light (to show if passenger AB is disabled due to not having enough weight in the seat). Once confirmed the wiring hookup configuration for the hazard button relocation harness, I was a bit frustrated that the light was still on. It might have eventually cleared itself after a few ignition cycles, but I really wanted to figure it out so I used my OBDEleven OBD2 scanner to reset the code (ABS ground fault). No problems since.
I haven't 100% put the dash back together yet because I'm going to try a GPS splitter cable to tie into the stock antenna instead of using the included one. I tried the included one with a GPS testing app and could never get acceptable signal strength vs what I could get on my phone, even if I ran the included receiver all the way to the top of the windshield. This probably is irrelevant as it doesn't affect Android Auto/CarPlay, which rely on the phone GPS. I'm just curious about the built in navigation and it wasn't a bunch to spend to try out. Once that comes in, I'll put the main dash bezel back in the car. If it doesn't work, that's not a deal breaker. Was just curious if I could improve things. If it does work, I don't know why this wouldn't really be the included option vs a whole receiver. (BTW, if anybody else goes this route, get the right angle SMA connector. The straight one won't fit in the space available.) https://www.aliexpress.us/item/3256...st_main.5.1c3518024jcmmd&gatewayAdapt=glo2usa
Wireless connection is iffy at times. Sometimes it's great, sometimes I can watch the bluetooth connect on my phone then try to hand off to wifi for Android Auto and it will just cycle the wifi connection to the head unit over and over. Other times it works right away and stay stable. Can't figure out if there's something that can resolve this. Still playing around. Wired Android Auto is fine. According to the seller, I have the latest software and Zlink versions. Is there a way to update Zlink OTA if a new version becomes available? I can go into the settings and check and it says I'm up to date, but just wonder if that's possible in the future. I've not done a ton of research, but what I have says Zlink licensing might be weird. This inconsistency is my biggest annoyance with the unit.
Unlike my old unit that just tapped into the factory screen, I can't long press the steering wheel phone button to activate the assistant. That's annoying. Have to do verbal commands only or use the touch screen button. Not the end of the world, I just got used to using the hard button.
Just like my other unit, the Audi console volume knob allows you to skip forward and back (by pushing sideways on the knob) just like the stock MMI, however, pushing it down only mutes audio. It does not behave like the MMI and pause streaming audio. So whatever you're listening to plays in the background during the mute. Annoying for podcasts and books. You can touch the screen, but having that hard button work would be nice.
This unit tries to emulate the HVAC temp changes that happen on the stock interface. Audi shows whichever side of the car is turning up or down the temp and what the setting is on the screen. However, this unit just puts up a graphic that instead of the temp shows "HI". So half done UI. My old unit had no HVAC interface at all when in Android mode.
I've still got the protective film on the screen right now until I take it back off to put in the stock bezel, but I could do with a bit brighter screen. It's not unreadable, but 20% brighter would be nice for sunny days.
Just like the old box I had for Android Auto, this one doesn't change the day/night mode on maps. You have to manually set it to dark or night if you want it to change depending on lighting conditions. At least it's easier to access in the menu now that I have a touch screen.
I logged into my Google account on the stock Android part of the unit to install a couple of apps (GPS tester, etc.). Somehow the thing deleted ALL my google contacts when the account synced up. I restored them from trash and could see the device that did it, so I know it's this unit. It was fine for a few days, then did it again. Might be when I connect to wifi at home to go to the Play store that it does it. Probably a setting to turn off sync, but I haven't looked into it yet.
It currently mutes Android Auto if I switch to one of the stock screen views except I think the backup camera. I think that it initially did it on the camera, but there's a setting to change that. I just need to find that for if I look at one of the other screens like drive mode.
Overall, the navigation speed is good enough. If I can get the auto-connect wifi cycling resolved, I'll feel a lot better. Would I buy this unit again? I might try one of the other brands honestly. Just because this one feels ALMOST there, but just cheaped out a bit on processor and screen. But if you get a good deal, it's totally functional with a few quirks.
The other brand I was considering seems to have more sales. That is Coika. Who knows if they're really the same thing from the same factory. Wouldn't be surprised, but it would be good to compare back to back. I'm just not going to do it Either of these options are half as expensive as RSNAV or some of the other more Audi forum prominent brands.
That in depth enough?
Conveniently the GPS cable arrived today that allowed me to tap into the car's GPS antenna. Big win if you ever want to use the built in navigation. Works great, although the cable I ordered is a bit tight. Now I can pull out the other GPS antenna that I had routed behind the glove box to go up the A pillar.
While installing, I googled B8.5 MMI GPS hookups to make sure I had the right cable off the back of the MMI unit. Apparently I wasn't exactly an original thinker, at RSNAV already offered these cables. This is the way to go and the AliExpress sellers should 100% include these instead of the full antenna that you have to mount somewhere.
Audi Original GPS Antenna Splitter Cable for S2, S3, S4
Audi Original GPS Antenna Splitter Cable for RSNAV S2, S3, S4 Android system on Audi Vehicles with Audi Navigation System only. - Best reception of GPS signal for your RSNAV S2,S3, S4 Android system - GPS hot start, super faster time sync - Work both for Audi MMI system and S2, S3, S4, This is...
rsnav.com
*I have not tested the stock nav yet, but I never use that anyway. I'll try to remember to look to confirm that's still working. Might be some kind of time interface into the car that it grabs from GPS, so it might still be important. I'll do it before I reinstall the dash. I just wired it enough to verify via the GPS testing app that it was better than the included antenna (it was).
Thank you Andy, much more detail than i expected.
Really appreciate the quick writeup esp the notes on the gps issue and getting a splitter.
Andy S said:
This probably is irrelevant as it doesn't affect Android Auto/CarPlay, which rely on the phone GPS. I'm just curious about the built in navigation and it wasn't a bunch to spend to try out.
Click to expand...
Click to collapse
Great review and very interesting because I'm looking at getting the same car. Just a small point, Android Auto does in fact use the car's GPS where possible. Waze uses the phone GPS but Google Maps and Sygic can use the car's GPS, for example.
Cutprods said:
Great review and very interesting because I'm looking at getting the same car. Just a small point, Android Auto does in fact use the car's GPS where possible. Waze uses the phone GPS but Google Maps and Sygic can use the car's GPS, for example.
Click to expand...
Click to collapse
I doubt it would in this case, as Zlink as I understand it is kind of a hack to make AA work. On a truly integrated solution, I'm sure you are right.
Andy S said:
I doubt it would in this case, as Zlink as I understand it is kind of a hack to make AA work. On a truly integrated solution, I'm sure you are right.
Click to expand...
Click to collapse
Works with the Headunit Reloaded app, that I use on my older PX5. I don't know if you can use that on your new HU? Zlink and Easy Connection never worked well for me.
Cutprods said:
Works with the Headunit Reloaded app, that I use on my older PX5. I don't know if you can use that on your new HU? Zlink and Easy Connection never worked well for me.
Click to expand...
Click to collapse
I might try it to see if it will solve my wireless issue. This is my first real Android head unit other than the pass through box I used before that isn't really a head unit. Is there a best way to install? Just from the Play store?
Heya, sorry I completely forgot to post about my Qualcomm 665 8/128GB Unit that I bought after putting it in.
Here's my thoughts:
Short TL;DR seems to be: Don't buy Nuuno or the other brands, according to BMW Forums get a Navifly Unit. (They seem to cost as much as the Nunoo or others but give far better configurability thanks to mods and seems to be more known):
The Configurations to look for seem to be Qualcomm 450/625 with 2GB/32GB or 4GB/64GB
For REAL Android 11 and from what I read even Android 12 it would be: 4/64, 6/128 or 8/256 (Look at the 6/128GB, all the other Units normally have 8/128GB)
Here's for more Information on how to get one and being sure that yours is legit and where I got this from (I hope XDA allows the Links, if not Google for "BMW KSW Android 10" and use f30.bimmerpost):
10.25" Android 10 HU discussion
10.25" Android 10 HU discussion
f30.bimmerpost.com
10.25" Android 9/10 HU theming and discussion
10.25" Android 9/10 HU theming and discussion
f30.bimmerpost.com
Android 11 HU discussion
Android 11 HU discussion
f30.bimmerpost.com
But since we're here about the Nuuno let me add some stuff about mine:
The Package with the radio arrived pretty swiftly and pretty much everything you need to tear apart my A6 4F was included.
Sadly the new Plastic Insert for the Radio/Dash is the wrong color (My older 4F uses a dark gray and the new one is silver like for the newer 4F) but that's not much of a issue, still looks good. BUT the fit is not that well done, it has quite a few bigger gaps all around compared to the original plastic. You tend to forget about it though the longer you have it in your car up to the point you won't even notice it yourself anymore or even care.
Same problems with GPS here, the Signal is pretty bad to okayish at best so also need to try to get the original GPS antenna connected but it's not a huge breaking deal since using Android Auto it still works well and I dont care about the built in one.
Android Auto Wireless is also iffy here, sometimes it tries to connect, the fails and never tries again until I disconnect and reconnect my Phones Bluetooth connection to the headunit, then it works first try. What also seems to help is immediately after the Unit is booted up opening the zlink app, Then it also seems to work 90% of the time for me. Wired Android Auto works 100% of the time.
Using the Steering Wheel Controls is perfectly fine, I can even skip songs ahead or go back with the left one that normally selects the Input. That is something my older Android Auto retrofit module couldn't do.
NEVER EVER LOG INTO YOUR MAIN GOOGLE ACCOUNT ON THESE "FAKE" OR OLDER UNITS. That is sadly a well-known practice in most of the Android Car Radio Forums since many seem to have that annoying bug that deletes your Contacts. The Navifly/KSW Android Radios seem to not have this/or it got fixed.
Better be safe and always use a throwaway account on these things.
The Muting Sound when going to one of the original Car Menus is pretty bad, or well on mine it doesn't actually mute, it stops playback. If I start the music again from my phone I can listen to my Music and go through the original Car Menus. It sadly aslo cannot be deactivated this "Feature". Only on the Navifly/KSW Units mentioned in the BMW Forums you seem to be able to do it which is probably why I will get me one of those. Hopefully I won't forget to write a bit about that one too.
Lastly the AC: On my MMI 2G 4F the Display shows the correct Temperature that I set on my AC in the Display..
I hope this also helped a bit since these Units don't seem to be well known about only or atleast reported biut if you look on Aliexpress they're pretty much the first 10 you get shown when looking for Audi
Thanks for the info @Darthsternie. Do either of those brands make a unit that works with Audis? I briefly looked and couldn't find anything. I hate to end up buying a third unit for my car, so I guess I'll keep this one for the time being. I just really want to get the wireless piece figured out.
I just went out and put my stuff back together to confirm the GPS splitter cable did not interfere with stock nav, and it doesn't. So whatever the car might use GPS for should still work. While doing that, I confirmed what Darthsternie said about switching to the stock interface, it does pause playback. Not just mute. I assumed that was correct, but wanted to confirm on my unit. Backup camera has an option to disable this, but if you go into anything else from the Audi MMI, it pauses.
Also, thanks for the info on the temp. I'm on the 3g MMI "High" on my 2016 S4 (B8.5). "High" I believe means has stock NAV. Might ask the company about my issue. To be honest, since I have the dual temps shown on the temp dials, it's not really something I care much about.
I did log out of my google account and used an abandoned account I used years ago for a specific purpose that I no longer need. Should have known better. My concern was for apps I may have purchased like Torque. Don't really want to buy again. Wonder if I can put my other account in my family? Will look up how many people can be in a family. I think I'm at 2 right now.
As to the wireless, once I get in a bad state where it's constantly looping the connection attempt, I've been unable to solve it without a reboot. I can kill Zlink. I can cycle bluetooth on the phone. I can manually navigate to Zlink, but that's not the problem because I can even auto-launch Zlink at start and it still does it.
Will have to investigate a replacement for Zlink if that's possible on these. I just haven't really dug into Android head units enough to know anything at this point. Need a good wiki or something
Navifly is not a guarantee either, they also sell snapdragons as well as MTK units, you want the legit snapdragon with the KSW software if you want to have a compatible unit with what most of the modders are using. I got mine a few years ago from Navifly and it is a P60 cpu MTK unit and it works well and gets the job done, but I would much rather have a KSW based unit.
I also have a B8.5 Audi.
You should download Device Info HW from the play store and it will give you a breakdown on the unit and let you know if they are faking the android version, etc.
Device Info HW - Apps on Google Play
Hardware and software information app for Android devices.
play.google.com
twist said:
Navifly is not a guarantee either, they also sell snapdragons as well as MTK units, you want the legit snapdragon with the KSW software if you want to have a compatible unit with what most of the modders are using. I got mine a few years ago from Navifly and it is a P60 cpu MTK unit and it works well and gets the job done, but I would much rather have a KSW based unit.
I also have a B8.5 Audi.
You should download Device Info HW from the play store and it will give you a breakdown on the unit and let you know if they are faking the android version, etc.
Device Info HW - Apps on Google Play
Hardware and software information app for Android devices.
play.google.com
Click to expand...
Click to collapse
Suspiciously, Device Info HW will install, but fails to run on launch. Will dig a bit more.
I finally heard back from these guys and got a screenshot. Here is the link for the unit.
https://www.aliexpress.us/item/3256803161214499.html?spm=a2g0o.cart.0.0.3a3738dazQvvo3&mp=1&gatewayAdapt=glo2usa
And here is the screenshot he sent. This is the newer KSW software and it should be a legit snapdragon 662.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Talking to these guys through their aliexpress translator is almost futile. I ended up sending him a screenshot with the APP Ver highlighted on a different older KSW unit and then he sent this back.
I have just bought this one for my Audi A6 C6 from 2005.
https://de.aliexpress.com/item/1005005240382533.html
I hope it's a real 662 Unit but according to the seller and a screenshot from them it is.
I will try to report back again when it arrives and compare it to the Nuuno Unit that I have now
Hi,
Ive just ordered 2 weeks ago a Nunoo 12.3 128+8GB device with Snapdragon 665 for my A5 B8 Pre-Facelift. Ive asked the seller to confirm if its really 665 and he did. I can also confirm, that my device have a 665 if i can trust CPU-Z this device info software shows also Android 12S. I dont know, if its better to have this MTK8581 CPU like on the COIKA devices or the Snapdragon 665. I just can say i was focused on the 665 because this is that, was RSNAV uses.
I had before an RSNAV S1, so the first generation in 10.25". This unit was also for sure not bug free and i switched it because it was now fully bricked. I got random bootloops and blackscreens, even after factory reset. My brightness control was buggy, it was inverted and dark at day and bright at night. Support from RSNAV haven't helped me with that. Finally, I also had no GPS reception any more. I had used the roof antenna from the A5 for the S1, without the splitter. However, as the roof antenna is a known problem and tends to break down overnight, I assumed that this problem had now also affected me. But that's not true, because the roof antenna now showed 15 satellites when connected to the MMI again After research, I found out that this was also a known problem with the RSNAV S1, that the GPS transistor burns out and that this is not repairable.
I don't have any further experience with the new Nunoo device yet, I need a few more days for that. I can report back then. What I noticed is that the frame that was sent to me has a much worse fit than the one I had with the RSNAV S1. Let's see if the support team can do something about that.
By the way, some people have already reported that the RSNAV firmware runs just as well on the Nunoo devices. I have not yet tried this out myself. However, this could fix some bugs and possibly bring a few more options.
RSNAV was a major rip off IMO, they are just selling the same Chinese units at a markup and the markup is not worth what little support you might get, that is just my opinion and I know many will disagree.
The snapdragon is going to be way better then the MTK I had an MTK previously and it worked fine but I was unable to change launchers or do anything outside of what they supply, the MTK units are super locked down and proprietary, the snapdragons have all kinds of fun mods and capabilities so you can really dial in your head unit how you want it to be.
I don't personally know anything about nunoo but these units are almost all made by Mekede / Navifly and being resold by multiple different stores just rebranding. I am sure there are some other companies making fake units, but a lot of the chinese stuff all comes from the same factory and then a ton of other companies rebrand them and resell them.
Even my previous Mekede MTK unit was fake android 10, it was really android 9, the fraud and scams on aliexpress is so unacceptable, which is why I buy very little there, these headunits were the only 2 purchases I have made on there in the last 2+ years.