yashsingh1/xdaforums huggingface dataset:
[G4 General] neutrondev:
Give me the files you flashed, I have Qfuse: ON, after flashing the ls991 emmc_programer from gsm hosting
[G4 General] steadfasterX:
you will get a PM in some minutes.

Please also take a look at my thread here:

https://xdaforums.com/g4/general/bl-unlock-unlock-bootloader-proof-t3648288

.
[G4 General] neutrondev:
Updated posts, please if there are any people that have hardbricked G4 and DID NOT USE emmc_firehose on the internet and QFIL PM me.
[G4 General] Chebhou:
[MENTION=5402146]neutrondev[/MENTION] I have used the LS991 qfil on my H810 and it showed up as LS991ZVA then flashed the ZV6 img files and it changed to LS991ZV6 ( tried ZV5 and H810 img but they break it ) and now it is running UltraPop 1.51 rom and twrp as a recovery ( with Scure booting error Modified ! ) bootloader seems to be locked and no root the main part is that I have cell service ( calls /sms) but no mobile data internet .
[G4 General] TheMadScientist:
Did you set up your apn in network settings. For data and mms?
[G4 General] Chebhou:
That's the problem it is locked there is only "ota" in apn menu and it's grayed out. Tried the hidden menu tricks with no luck because i couldn't enable "Itson" ( if i remember it correctly )
[G4 General] steadfasterX:
As long as you have secure boot disabled in fastboot you can just root with supersu in TWRP.

Secure booting error is normal where >modified< means custom ROM/kernel and >official< means stock Kernel

.
[G4 General] dianxxyyzz:
<MOD EDIT - Non-English content removed.>

Dear steadfasterX , maybe the problem with missing IMEI or etc , after you flash the h811 files inside a h815 apper because h811 and h815 have different partition sizes ,and I think when you flash a H815 with qfill and files from h811, it change the partition table and you lose some modem .I 'm not sure .But is what I think
[G4 General] steadfasterX:
<MOD EDIT>

I playing a lot with the G4 partitions and the GPT so I can say yes they have different GPTs but thats not the reason for loosing IMEI. It does not happen always and for every device but fixing IMEI is no problem after using the QFIL flash. reflashing the EFS (fsg) is enough here.
[G4 General] dianxxyyzz:
I'm not sure if qfill rewrite partition table too , or it just write over partitions . But I think it also write partition table too .What is your opinion , it rewrite partition table or not?

---------- Post added at 10:08 AM ---------- Previous post was at 09:49 AM ----------

you succeded to run 2 times qfill ? Or it is designed to run just only one time
[G4 General] steadfasterX:
I have no opinion on that ;) I know that the partition table gets rewritten. its based on the rawprogram XML. I write my own partition xmls btw.

Yes u can re-run Qfil without a problem but! its crucial what files you use. u can use the same one again if they do not blow fuses other then the qfil programmer can handle.

and if you flash a ROM which blowing fuses (e.g. ZVB on a LS991) u are lost and can not use qfil again!

sfX
[G4 General] dianxxyyzz:
I'm not sure if the files you flash 'blow fuse' or the prog_emmc_firehose_8992_lite do that by itself .
[G4 General] steadfasterX:
both.
[G4 General] dianxxyyzz:
What makes me thinkthe partition table get recreated is the presence of gpt_main0.bin file , that I think is the partition table of the emmc . What rawprogram0.xml looks to do is to to inform qfill where to write stuff , but the gpt* files looks to contains data about partition table .
[G4 General] steadfasterX:
correct. writing the GPT is done by patch0 xml
[G4 General] dianxxyyzz:
I'm curious if you flash inside a H815 a aboot partition (emmc_appsboot.mbn) from a H811 , if it will boot or not . I'm not sure if you really need all other partitions ( tz ,sbl) , or if we can just flash the aboot partition witch contains fastboot and is responsible for unlocking
[G4 General] dianxxyyzz:
Inspecting aboot source code , I see the fact that a device is unlocked is writed on the devinfo partition . Can you try to copy that partition from a unlocked phone to a locked one and see if it unlocks?
[G4 General] steadfasterX:
this is going too OT here. Lets continue where it belongs to:

https://xdaforums.com/g4/general/bl-unlock-unlock-bootloader-proof-t3648288/post73750884

thx

sfX
[G4 General] cloud4607:
I have an H815, turns on, goes to the green android and reboots in loops. Before i had a blue screen with some writing that said modem etc, i had lineage os at the time.

Is there any way to resurrect my phone? I can enter fastboot mode if i do some trick found online, not via buttons though.

PS: never used the firehose or any other strange thing :)
[Samsung Galaxy S5 Neo Questions & Answers] broucker:
hello! i have this model that was branded by orange. just today ive flashed latest generic firmware but it seems that the lock remains active. can someone teach me how to unlock it?
[Huawei P10 Questions & Answers] aalmeida1972:
Hi, I've trying to unlock the bootloader thrue the Huawei website.

I created an account, as requested, but I never received the confirmation email. I tried several times but I still didn't received.

Does anyone know how can I get the unlock bootloader code?

Cheers
[Android Auto General] ghoter:
Does anyone have new Joying HU with surround digital amplifier? Has the sound quality improved?

https://www.youtube.com/channel/UCFr...zWiloVA/videos
[Android Auto General] pounce:
They just came out. I posted in your other thread. I have one coming tomorrow. It may be some time before you get any real feedback since they are new. Looks promising, but we learn not to get our hopes up too much.
[Android Auto General] CadillacMike:
that's cool, I'm looking forward to hearing your thoughts on the new unit
[Android Auto General] pounce:
For reference:

https://www.amazon.com/gp/product/B073LF3GZP

Others should buy this so I have safety in numbers :)
[Android Auto General] Ziggyrama:
I wouldn't expect greatness from an amp in units like this. Any good HUs that have optical out? That is probably the safest choice to get good sound out of these units.
[Android Auto General] pounce:
Anyone seen an android unit with toslink? For what its worth method of transport has no relation to sound quality. They solve different needs. Transport is like a road. It can be smooth or bumpy, but has nothing to do with the car you drive over it. You can send crap over a toslink and the head unit would have to convert lower grade data to PCM.
[Android Auto General] Ziggyrama:
Yes, you are correct but it is important to note how these units are built. Toslink removes the need for DAC which is the weak link. Basically, the unit reads digital media and sends digital signal to something else which has its own DAC. Decoding and sending digital signals in these HUs is done with off the shelf chipssets that either work or don't. It is binary. A cheap DAC adds a lot of artifacts and general noise to the signal. So, the reality is, a cheap HU that does toslink can yield good sound. A cheap HU with a DAC will not, because economics won't allow it. That is why I asked. To use your analogy, what is better, a smooth road paved with no seams and expansion joints or one that was paved piece meal with connectors and detours? Hope that makes sense.
[Android Auto General] pounce:
Many head units that have toslink really only had it for the CD or DVD and didn't convert radio or aux etc. A few units exist that do the conversion, but its pretty slim. I really don't think anyone has the expectation that for 300 bucks you are getting something amazing. You probably do get something incrementally better than the basic stuff we have been seeing.

Discussing toslink on these units is definitely an armchair topic and pretty far from realistic even if logically is makes sense.
[Android Auto General] CadillacMike:
i am really considering that 10.1 inch Joying, it would be my third Joying, so I have a good method of comparison
[Android Auto General] jcthorne:
Well if its like the previous Joying units you can expect about one in 3 units to fully function out of the box and that one to fail within 90 days. Cheap chinese low quality junk with no warranty support.

Second, it does not belong in this forum. Has NOTHING to do with android auto. Off topic.
[Android Auto General] pounce:
Do it! I need safety in numbers. I have a few others to compare that are still running.
[Android Auto General] pounce:
I popped it open. I actually don't think the back is any sort of serious heatsink. The digital amp is screwed to it, but there is a gap. Video out is cables alongside the left rear usb. I'm not sure what the empty socket is between the mic and the video out. There is nothing identifying on the silver box.

I probably wont get to bench testing it until the weekend or next week.
[Android Auto General] ElmoTheDestroyer:
Thanks for tearing into one of these... I've been really curious if that fancy looking back panel was actually a functional heatsink or not. Curious how you rank the sound quality and "no heat problem" this unit is supposed to be advertised for... Look forward to the rest of your review/testing!
[Android Auto General] CadillacMike:
I am very interested to see if there is a noticeable sound difference

My Joying died and I put in a Sony until I figure out my next move.

I was genuinely shocked at the sound improvement. And I always thought my Joying sounded great, but my speakers have come alive with the Sony
[Android Auto General] CadillacMike:
i got the 10 inch single din with an amp and DSP. I got it installed last night. only had a short drive to test it, but I think it sounds pretty great
[Android Auto General] pounce:
Did you get a model number on that? I had to have several emails with joying describing what I wanted with a single din and 10.1 screen. They told me to buy a certain one and then add 40 bucks and they would know what to send. Seemed weird. Just wonder if that's what you did also.
[Android Auto General] CadillacMike:
Not yet, mine was a replacement for my 8 inch that quit working. I emailed them asking for a specific model number so I can post it in my review
[Android Auto General] pounce:
Joying now makes it clear on their site:

I assume this is because there appears to be a lack of rear pre-outs, but I'm not totally clear. I did see that if you enable an external amp the controls are reverted to the old interface.
[Android Auto General] CadillacMike:
So I have had my new 10 inch unit for about 2 days, and it works great. *Bluetooth doesn't drop out, sounds awesome. *

today and only today, I was listening to music loudly, and I noticed it would drop out a bit. *I thought it was odd and looked at the screen, and I got this flash with yellow on top and some Chinese writing:

I did a reboot and it started working fine again
[Android Auto General] ElmoTheDestroyer:
Right on, thanks for posting your experiences with this unit... I decided to buy an Xtrons 10.1 octacore unit because it was around $100 cheaper than the Joying with the digital amp... Heard a number of complaints about wireless sucking and stuff so I'm eyeing the Joying as a backup if the Xtrons unit goes bad or I discover some sort of weird issue. I gotta admit, I have not encountered any problems with it thus far so hopefully I won't be needing to swap it for the Joying, but its good to know it generally works pretty good (and sounds good) ... One note about the Xtrons unit, is yes the wireless does kinda suck if I'm trying to use my home wireless from the driveway, however its rock solid and fast when I'm using my phone as a hotspot, which is how it will be used 99% of the time, so I'm pretty stoked thats not an issue! :)

Anyways, thanks again for the info guys!
[Android Auto General] marchnz:
Before the trumpet!
[Android Auto General] ElmoTheDestroyer:
Well, that explains everything. Clear error codes, gotta love'm! :) lol
[Android Auto General] gtxaspec:
Mike,

Translates to

Front speaker Overcurrent.
[Android Auto General] CadillacMike:
That's sort of what someone said on the Joying forum, which isn't very promising.

I was listening loudly, but still only somewhere between 18 and 22.

And it wasn't that hot that day and I hadn't been driving that long

Which sucks because it sounded really good
[Android Auto General] allenrb2:
I am thinking about buying this one, https://www.carjoying.com/jy-um138n2d-car-stereo-head-unit.html Because I want a bigger screen. I currently have the 7" JY-UM135N2 unit. Would you guys consider these new ones as an upgrade, or should I go with https://www.carjoying.com/head-unit/universal-car-head-units/8-double-din/717.html because they are tried and true now?
[Android Auto General] pounce:
If you have an external amplifier go with the second. Also, note that the second one you picked has a blue bezel. They offer a color selection on the 8" unit.

---------- Post added at 09:10 AM ---------- Previous post was at 08:28 AM ----------

Have you had a response from Joying yet?

I'm actually waiting on this issue before I install a couple of units. I don't want to go to the trouble in one case to bypass an OEM amp if this thing doesn't perform. I also don't want to buy line to rca converters to solve it since we don't have rear RCA's.

Perhaps a larger or better cap would solve the power issue. It's large and basic to replace.
[Android Auto General] CadillacMike:
i sort of heard a response:

so that clears it right up.

---------- Post added at 09:34 AM ---------- Previous post was at 09:31 AM ----------

So I might disagree with pounce. While I agree if you have an external amp, you don't need the Joying internal amp, if you do not already have an amp, the Joying amp is definitely able to power regular speakers and sounds pretty good. Plus the EQ is pretty legit.

I did get that one error message, but it only happened once. The newer units with the amp are supposed to handle heat better. The 2nd unit you posted seems to be the same unit I had that died after 8 months. Now they did replace it, no clear answer as to what caused it, but seems like a heat issue
[Android Auto General] pounce:
It's possible I did a poor job explaining.

If you have an external amp you intend to use the digital amp Joying units are NOT compatible. There are no rear pre-outs.
[Android Auto General] allenrb2:
I don't have an external amp for my regular speakers, only my sub. So the problem you had with the volume turned up isn't recurring? It would definitely be a no go for me if it were. I regularly have my current unit turned up to 26 or higher. Thanks for the help and insight. I plan on buying one on Thursday, so any and all input is appreciated.
[Android Auto General] CadillacMike:
26 on a Joying or a different unit?
[Android Auto General] ghoter:
However, sound quality-better than previous amps (TDA7388, TDA7850)?
[Android Auto General] marchnz:
Its a class D amp - unlikley! More likely that these units are another reduction in production cost.
[Android Auto General] allenrb2:
26 on a joying
[Android Auto General] CadillacMike:
well, I rarely got that high, so I can't confirm you wont have that issue. I usually was at 18 to 22, using Google Play Music.
[Android Auto General] CadillacMike:
looks like they posted a video of the internals:

https://youtu.be/WzaCgyrteoM
[Android Auto General] pounce:
Nice. Looks like the amp is socketed. That could open up some easier hacks.
[Android Auto General] marchnz:
Consider a standard MTCD with PX5 and RCA connectors connecting to external amps instead - 'hacking' the connector will simply provide line-level outputs - i.e. what RCA connectors provide. Where to go from there - connect external amps to provide configurable power output.

Also, discussing audio level in an idiom is meaningless. The number is not relative to anything other than itself and the next unit may yeild different power outputs. Just as MTCD are...

https://www.youtube.com/watch?v=KOO5S4vxi0o

https://en.wikipedia.org/wiki/Up_to_eleven
[Android Auto General] allenrb2:
So from all this discussion it kinda seems like I should go with the older unit. I know from experience with the 7" that there's no volume limiting or anything. I am going to be ordering in a few hours when I get home from work. I just don't want to order the old one, and the new ones be actually better. Especially since I am in southern Alabama where it gets blistering hot, even though heat hasn't been an issue so far.
[Android Auto General] CadillacMike:
you can get the newer one for better heat handling and just turn the amp off if you dont want to use it there is a power button in the software

---------- Post added at 11:17 AM ---------- Previous post was at 11:15 AM ----------

it is relevant on the exact same unit? My 18 on my Joying will be the same as their 18 on their Joying, assuming they get the same unit, which is what we are talking about.

Obviously 18 on a Joying is not the same as 18 on a Sony and/or a different Joying. But if we are talking about the same model with the same specs, then it should be relevant
[Android Auto General] allenrb2:
I went ahead, and ordered the new one. Hopefully I will be as pleased with it as I am with my current Joying.
[Android Auto General] CadillacMike:
I am sure you will be
[Android Auto General] marchnz:
Once again, this is a class D unit, with reduced production cost . If purchased below cost of typical MTCD, and accepting the cons (no preouts, class D amp, unpublished specifications) unit could be considered a cost effective choice.

[MENTION=7408972]CadillacMike[/MENTION], do you have any connections with JY, joying, joyous, an or involvement in reselling or installing?
[Android Auto General] CadillacMike:
I am not a shill for a product just because I say someone is going to like an improved version of a product they clearly stated they already liked.

I actually have a Seicane installed at the moment

[youtube]mHTSLw4HBUw[/youtube]

But I had Joying in for a year but when my last unit died, I ordered the Seicane to try something different.

It looks better, fits the dash better, screen seems to look better, and some things about Android on there are better.

However Joying sounds better and has better functionality.

I have been on this forum since before I had a Joying, in my old posts I was looking for an Eonon or a S160.

However since owning a Joying and being a part of this forum, I believe Joying does Chinese Android head units better. They were one of the first to have 2GB of RAM, they offer near monthly updates, once you get past the language barrier they have pretty awesome customer service.

And I had a Joying MTCD and a Joying Intel, and the Intel is WAY better. I also had the non-Amp version and the one with the Amp, and once again the Amp version is better.

I also had the Sony XAV-AX100, and it absolutely sounded better, but the Joying with the amp isn't far off.
[Android Auto General] Grungi:
If that Class D amp produces less heat and sounds better, what should be the problem with it?

The big question is, if they improved the DAC/Codec as well.

Greetings
[Android Auto General] marchnz:
What does sound better mean? Better than what and how do we assess 'better' :)

I seriously doubt the joying class d amp has lower THD, 'better' :) slew or greater output power than the stmicro TDA amp it replaces.
[Android Auto General] allenrb2:
Luckily I will get to find out for myself on Friday, according to DHL at least. I will post thoughts, and opinions after I install it.
[Android Auto General] allenrb2:
I received the radio today. So far the only thing I don't really like about it, is that there are no sub controls, and the sub volume isn't even tied to the radio volume for some reason. I will continue to test it, and give feedback when I have used it more.
[Android Auto General] allenrb2:
I see on the joying youtube they have units with video out. My radio doesn't have that. Do any of you guys know if we can just tap into the pins to have that feature as well? https://youtu.be/WzaCgyrteoM?t=181
[Android Auto General] CadillacMike:
i figured out on mine, if I go to CarSettings and turn "Loud" off, then i dont get that yellow error message
[Android Auto General] pounce:
What radio did you buy? The video out on these units in on the right bundle of cables and not rca's on the back plate.
[Android Auto General] allenrb2:
I got the JY-UM138N2D it doesn't have anything on the right except USB
[Android Auto General] pounce:
If you feel comfortable open it up and look for the empty sockets on the main board where I show cables on the pics earlier in the thread:

https://dl.xda-developers.com/4/2/2/4/3/6/2/4.JPG?key=cSUSHMXRkeTvRcKpMitb2Q&ts=1504106977
[Android Auto General] CadillacMike:
I made a video overview of the EQ

[youtube]YT3BnKvLSo8[/youtube]
[Android Auto General] CadillacMike:
Here is an overview of my JY-UMS02N2D, single din, 10 inch with the internal digital amplifier:

[youtube]-fXdrpCrUa0[/youtube]
[Android Auto General] pac.eden:
So, how is the sound quality comparing new digital amplifier vs. previous TFA7850/TDA7851?
[Android Auto General] CadillacMike:
I could never figure out how to get the EQ to sound just right.

I am currently using Seicane
[Android Auto General] pac.eden:
What about leaving EQ on both units completely flat? How would they compare than?

Aren't all those units only rebranded reference hardware designs with the same hardware and amplifiers? As far as I know, Joying is the only one, that went an extra mile with these digital amps.

I'll have a look at Seicane. I need an Universal 7'' unit without buttons for my Alfa Romeo GT, so if you have any suggestions, they are more than welcome.
[Android Auto General] marchnz:
Extra mile? Its a low power class D module/hack! The emperor has no clothes :)
[Android Auto General] pac.eden:
Haha, agreed! But still better than nothing. It's a shame they don't put more effort in sound quality, because only for a few dollars they could improve the sound dramatically (a new DAC would be a good start). But truth to be told, I think my OEM radio is even worse. Coming from my home Klipschs and Yamaha doesn't help as well :p
[Android Auto General] CadillacMike:
I have had Joying MTCD, Joying Intel, Joying Intel with Digital Amplifier, Seicane Allwinner, Dasaita PX5 MTCD, and I just got a Seicane PX3 MTCD

I definitely do not think they are all the same hardware at all.

I definitely do not recommend the Joying with digital amp, it just never sounded right.

Dasaita sounded great, but had a weird bug.

I am expecting my new Seicane with the PX3 and Android 7.1 to be my favorite

---------- Post added at 07:59 PM ---------- Previous post was at 07:58 PM ----------

All of my Android head units have sounded better than the **** OEM 430N in my Jeep

---------- Post added at 08:02 PM ---------- Previous post was at 07:59 PM ----------

Here is an overview of my current Seicane

[youtube]KRsV76CeW3Q[/youtube]

If you do order from their official site you can use coupon code "5after12" for a 5% discount.

But check their eBay site, sometimes it is cheaper there and I do not have a coupon for that
[Android Auto General] pac.eden:
Thank you for all the info an the coupon code :victory: , I'll see what I can find.

Isn't PX3 (quad core) only a predecessor to PX5 (octa core) and was used in older units?

What kind of bug did Desaita have?

I just found one that suits my needs perfectly. 2GB RAM, 32 GB NAND, no buttons, PX5

It's interesting that you find those units to be so different, but information from an actual user is the most reliable, so thank you. What about bluetooth functionality? Information is all over the place, but Intel Joying should have the best integration...
[Android Auto General] marchnz:
Indeed. The chinese designer is so close, yet so far away. Such a pitty feedback does not reach the right people, but ostensibly I suspect the entire android headunit platforms are based on ported code/process from the WinCE units. You can see that in the hardware, things like the original MTCB GPS, BT and especially the MIC implementation where they "parallel" the internal and external.