yashsingh1/xdaforums huggingface dataset:
[MTCD  Android Head Units Q&A] marchnz:
What was the MCU and Android firmware versions prior to starting?

Have you tried removing all power? What happens when you press reset?
[MTCD  Android Head Units Q&A] typos1:
He flashed the experimental MTCD PX3/RK3188 7.1.1. ROM.
[MTCD  Android Head Units Q&A] Garfanki:
My head unit is still alive... Thanks to all!
[MTCD  Android Head Units Q&A] S@lman1996:
How did you downgraded from px3-userdebug 7.1.1 to Android 5? Can you help me with the steps? Because Android 7.1.1 cannot detect my OBDII.
[MTCD  Android Head Units Q&A] typos1:
What is special about the ROM for flashing back to L ? I ask because someone with an MTCB unit flashed the experimental N ROM (on purpose !!) and it booted, sound played, but the screen was black, (which seems good news for MTCB owners in possibly getting N). I dont think they used that ROM to flash back.

I guess he did what was posted at the bottom of page 5 of this thread - there are clear instructions on how to flash back to L written there for all to see . . . :)
[MTCD  Android Head Units Q&A] S@lman1996:
I'll try those and update in XDA. The main reason for downgrading is Bluetooth not detecting OBDII
[MTCD  Android Head Units Q&A] S@lman1996:
Where can I get the link for Android 7.1.2
[MTCD  Android Head Units Q&A] typos1:
Its 7.1.1 and its in the first page of this thread !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[MTCD  Android Head Units Q&A] cupi1234:
It's 7.1.2 !!!!!!!!!!!!!!!!!!!!!! and it's in this thread :https://xdaforums.com/android-auto/...asaita-mcu-updates-rockchip-px5-octa-t3575155

And here is the link from hotaudio HCT2_px3_7.1(20170703) https://www.sendspace.com/pro/dl/cq1ez8
[MTCD  Android Head Units Q&A] typos1:
Is, it ? I just looked at the first page (something [MENTION=8406911]S@lman1996[/MENTION] couldnt be bothered to do) where at least TWO people said it was 7.1.1.
[MTCD  Android Head Units Q&A] cupi1234:
https://xdaforums.com/showpost.php?p=72975514&postcount=124
[MTCD  Android Head Units Q&A] typos1:
Thats on page 13, I just looked at the first page cos [MENTION=8406911]S@lman1996[/MENTION] couldnt be bothered to search the thread before asking a question (which breaks xda rules), if you think I m gonna waste my time scrolling through every page of this thread cos another user cant be bothered then youve got another think coming, as they say. :)
[MTCD  Android Head Units Q&A] zerozoneice:
i'm about to get today a Witson (at least packaged by..) PX3, 2gb ram, 16gb rom, 9" with touch buttons on lower bezel, installed with 7.1.1 from factory. Boxes came in couple of days ago, i suppose Nougat is production-ready?

hope i don't get a f****g "test version" watermark :) besides, 7.1.2 seems to be out for some people already...

anyway will get it tonight and post details.
[MTCD  Android Head Units Q&A] typos1:
Cool, any links ?
[MTCD  Android Head Units Q&A] S@lman1996:
Yes, I have 7.1.2. Here's the link.

https://www.sendspace.com/pro/dl/cq1ez8
[MTCD  Android Head Units Q&A] typos1:
Ta and links to the website to buy ?
[MTCD  Android Head Units Q&A] marchnz:
Px3 2gb SOM purchase link

Try http://s.aliexpress.com/mEjmYram

Lists 7.1 px3 2gb.
[MTCD  Android Head Units Q&A] typos1:
Ta.

Bit pricey, same as the RK3368/PX5 SoM - I d be happy with an RK3188/PX3 with 2gb RAM, but if theyre the same price whos gonna bother with the quadcore ?
[MTCD  Android Head Units Q&A] zerozoneice:
the ones whose boxes operate in hot environments and don't like a hot running PX5, or the ones who really want 7.1.x (not out for PX5 yet, right?) :)

anyway, got the HU installed, first impressions (compared to joying 5.1 with hal9k_'s mod) are:

MTCD_XRC_V2.44_1

(browsing 4PDA i found out 2.54a is out for MTCD_XRC already. Comes along a 7.1.1 build dated 24.05.2017)

- as fast as a 5.1 with MicroG :) (kidding almost, speed difference is negligible but in time with a lot of app switching, the 2GB will rule them all)

- screen has a higher color temperature, borderline cold, blue-ish tint. need to investigate some play store apps to tweak the K values.

- brightness is also higher, even in lowest setting in night mode

- FM radio reception is brilliant!!! NXP6686 kicks 7786 in the nuts. Hard.

- very good default DPI for the 9" screen, no idea what it is, i'll check later

- some strange new setting in "Shutdown delay when ACC is OFF" menu: besides the 15s/30s...there is now a "Auto Sleep" setting and defaults to that

- same FM radio APK madness with switching PSNAME/MHz values in both display and FM preset box, as well as the rubberband effect of the FM preset groups

- same Music APK narrow file list when selecting songs from current directory

But it's 7.1.1 allright and it looks good. Attached some shots.

What i miss straight away are:

- security code setup from [MENTION=5092263]Hal9k_[/MENTION] mod

- wider list to select songs in the mediaplayer

that's it for now....
[MTCD  Android Head Units Q&A] typos1:
Thanks for the review.

Yes, my first MTCB had a 7706, my second has a 6686 and it is good.

The later KLD MTCC L ROMs havve a radio apk that you could set your own name on the preset button. They also had a music player that had everything on one screen (below) I had thought all MTC music players had this design now.

Some people modded the 4.4.2. and 4.4.4. MTCB music apks (on the fileserver in my signature) to have a wide list, maybe those apks would work on MTCD N ?

You could try, I dont think they will but its worth trying (make a copy of the original so you can restore them if they dont). If they dont work you could always decompile the apks, find the code that pertains to naming your own presets/wide music list and add it to the MTCD N ones.

[MENTION=5092263]Hal9k_[/MENTION] said he was working on N so I m sure he ll release it soon.
[MTCD  Android Head Units Q&A] zerozoneice:
and i forgot to add that i have to copy over all my music from sdcard to usb stick now :eek:

yea i know i should experiment more with L apks but i've had enough for couple of days now...the 4.4.x APKs did not work on 5.1.1 so i strongly doubt they will on 7.1.x

i'm not going to root it manually, i'll wait for a custom ROM..and figure out how to enter recovery in the meantime.

and i suppose microG on these 2GB units will be a rocket, hrhrhrhr.
[MTCD  Android Head Units Q&A] typos1:
Why ?
[MTCD  Android Head Units Q&A] zerozoneice:
cos the new one has only USB cables, no SD slots...

just wondering, can the screen temperature be adjusted somehow? i remember a while back there was a Sony Xperia apk for mobiles that had several color profiles (movie, browsing, etc..)

right now it feels like a "dynamic mode" for LCD tvs, compared to a more pleasing on the eye "film mode" on the old joying...

edit: Looky what i found reg. cold temperatures, except i want the damn thing OFF not ON

reg. the "auto sleep" value: i started the car this morning and the unit booted straight away, in 2 sec it was operating...ACC cable is disconnected, so the new PX3 boards/MCU must have some deep sleep feature, wonder what amperage it eats up...

the MTCD_XRC seems to be a "new entry" on the market, can't find anything about it..where & who to enquiry about software updates and stuff. any ideas?

here's a shot of the unit:
[MTCD  Android Head Units Q&A] marchnz:
Agree - the px5 outperformes my px3 with 2gb RAM or 1GB with microG. My old mtcb unit gives a better experience than what the MTCD 1GB PX3 did, regardless of running microg. Re. Version of Android - suspect the apps are all based on the same source with all the same bugs anyway. Then there's the kernel version. I cant see how anyone is realising the newer android features on these cobbled android headunits which all share the same flaws.
[MTCD  Android Head Units Q&A] lamsquirrel:
Does it have old ui or the new one?
[MTCD  Android Head Units Q&A] S@lman1996:
Completely new UI.
[MTCD  Android Head Units Q&A] lamsquirrel:
And what about red text at the bottom of the screen?

Does rom work stable?
[MTCD  Android Head Units Q&A] typos1:
Bugs ? I m thikning of going from MTCC to MTCD, apart from the known mic problem (that can be sorted by separating them) on MTCB/C I cant hink of nay other bug. What bugs does MTCD have ? I ve heard some people saying BT can disconnect, what else is there ?

Any links to where you got your unit ?
[MTCD  Android Head Units Q&A] S@lman1996:
ROM is stable but need some fixes. No text will appear at the bottom
[MTCD  Android Head Units Q&A] typos1:
Flashed the test version, all ok, so flashed the "retail" version and I cant see the text at the bottom - but thats cos I get get a blank screen !!
[MTCD  Android Head Units Q&A] lamsquirrel:
Great!

And could I flash it if I have px3 1gb rom 5.1.1?
[MTCD  Android Head Units Q&A] typos1:
Read my post above - the test version worked ok on my L RK3188/PX3 MTCD unit, but I get a black screen with the "retail" version of the ROM.
[MTCD  Android Head Units Q&A] S@lman1996:
What is your MTCD version?

I advise you to get a factory ROM of 5.1.1 and install the version I shared, from the settings > Software update. If any problem occurs use the recovery to restore to Android 5.1.1.
[MTCD  Android Head Units Q&A] typos1:
It doesnt matter what MTCD version he has, the motherboards are all the same.

I installed the version you posted and I got a black screen.
[MTCD  Android Head Units Q&A] S@lman1996:
Then how come it's working for me perfectly well. But one thing to note is that my HU came preinstalled with Android 7.1 and I used software update from settings.
[MTCD  Android Head Units Q&A] typos1:
I dont know, myself and others are looking into it, the test version worked ok for me, but not the version you posted, maybe it is different for some reason, maybe there jsut happened to be a random error whilst flashing my unit.
[MTCD  Android Head Units Q&A] S@lman1996:
Can you try again? Is your unit entering into recovery?
[MTCD  Android Head Units Q&A] typos1:
Right, I tried the 03.07.2017 yesterday, I see there is now a 05.07.2017 version, I will try that . . . after I have made a recovery SD card for the 03.07.2017 one and recovered my unit :)

By the way, there is an MCU with the 05.07.2017 one, do you know what MCU type it is (GS, KLD, KGL, HA etc) ?
[MTCD  Android Head Units Q&A] S@lman1996:
I'm not sure about the MCU. I'll confirm and say. Also if you made a successful installation, please do post the photo. I also will install the same. Currently I've installed 03.07.2017
[Huawei P9 Lite Questions & Answers] 1gkar:
Hi,

I have recently upgraded from S2 i9100 phone to Huawei P9 Lite. Am loving it as a mid-range phone. I just don't require spending 4 figures on a portable device.

But, I am off-track. like most people here, I am not happy with the stringent restriction Android manufacturers put on phone hardware. I bet they wouldn't be satisfied with having their corporate computers having no full backup capabilities. I had rooted my prior device, but have not yet completed it on this device. Not sure if I will. I only wanted full Nandroid backups. I'm happy with this ROM. It may change, if I need more room, due to minimal internal storage.

I have learned how to achieve this, using ADB commands. I'm not a PC whizz; definitely not a device one. To date, I have unlocked the bootloader, & installed TWRP.

The questions I have are:

1) I cannot seem to boot to TWRP via the phone buttons. I can only achieve this via ADB commands. What am I doing wrong? Everytime it boots into the EMUI recovery. My first

attempt at installing TWRP had ended in failure. Or so I thought. It probably was installed properly. I hadn't thought to try booting into recovery with ADB tools. Which leads me

to my second question.

2) Using the great little programme, Firmware Finder, I found the hard-to-locate firmware for my phone -VNS-L22C706B130. As I live in New Zealand, it wasn't readily available to

download form anywhere I could find in-browser. I downloaded the relevant update.app file. The plan was to revert back to a total original state, then try again. When I extracted this to a dload folder, & copied to my SD card, I used the manual update method: power with volume+&-. It updated the phone, relocking the bootloader. However, it didn't complete a full stock ROM restore. My existing phone setup was still with all the apps & settings intact. Again...not sure what went wrong. Not an issue. But if I DO decide to restore to the original stock ROM, I need to understand exactly where I went wrong. Is the update.app file the only one required for a complete ROM restore.

Please, keep any answers in basic language. I do have some difficulty understanding some of the explanations on threads I have looked at. Thanks in advance.
[General Questions and Answers] Boysrockin:
I was abroad for some days, and I was able to use the sim card, when I came back to the origin, the local sim cards aren't able to connect to it's tower, I've tried different sims and even those sims aren't able to connect. But if I use those sims in other phone they are working.

I have tried formatting my phone but even that didn't help.

I use a HTC Desire Eye, Custom rom (S-ROM).

Please help.
[General Questions and Answers] MigoMujahid:
did you contact the local carrier company?, maybe it has something to do with global roaming..
[General Questions and Answers] FsGraphy:
Finally got the password for this account, and yes i contacted the carrier, they told it's fine on their end.

One thing I noticed is that, I just tried something today. When the range was full (5 bars) my net was working. When it went to 4 bars (it was still working) and on 3 bars (there were some problems like the net became slow) and then on 2 bars the net was slow as hell. And I won't get one bar, directly it'll show as no service.

Aaand When I manually search for towers, I can't find any 2G/3G towers. I can see only 4G towers.

Do you think it's a problem of antenna? Or the radio.img got corrupted?
[General Questions and Answers] MigoMujahid:
it could be a hardware issue, you appearently did nothing that could cause the modem to corrupt.
[General Questions and Answers] FsGraphy:
Hardware issue? Antenna problem? SIM integrated circuit?
[General Questions and Answers] MigoMujahid:
I'm not a specialist in hardware so i can't tell, you need to get it to expert.
[General Questions and Answers] FsGraphy:
I took it to a local shop, and the person there told it's an antenna problem.
[General Questions and Answers] MigoMujahid:
he knows what he is doing, so be should be right....
[General Questions and Answers] FsGraphy:
Just thought I'd comment, I bought a WiFi dongle and apparently even my carrier problem has been fixed, don't know how, or is it just temporarily, but it seems fixed.

I even get 1 bar now. Just need to try to see whether my net works or not with 1 bar.
[Huawei Mate 9 Questions & Answers] liran96:
Also can not download anything through Chrome, tried Firefox but same issue.

"download failed due to missing sd card".

Started to happen after I flashed a custom ROM, but still persists after flashing a different ROM.
[Huawei Mate 9 Questions & Answers] Paz9:
could be the rom

try clearing cache for "downloads", "download manager", "play store", "media storage".

also if you have a memory card go to memory and storage, change default location to whatever is not set (i.e if its on internal, set on sd card, if its on sd card set on internal)

restart, and try again.

what rom are you on?

also flashing on the mate is a pain in the rear, sometimes certain partitions can get messed up as theyre linked, make sure you on the same base as the rom before flashing it.

goodluck!
[Huawei Mate 9 Questions & Answers] liran96:
Thank you so much!

I changed the default download location from internal to SD card and it now works flawlessly.

The ROM I originally flashed(that's when the problem started) was the RomAur v1.3.1 02/04, now I'm on the latest version v1.4 12/04 but that didn't matter.

Also, after solving the problem I tried reverting back to the internal storage and try to download a file again, and the same issue happened.

I guess I can't download to internal storage now, though, so that sucks...
[Huawei Mate 9 Questions & Answers] Paz9:
i suspected as much, could be a encryption issue are you rooted? have you tried flashing a decrypt boot img?
[Huawei Mate 9 Questions & Answers] liran96:
I am rooted, but I did not flash a decrypt boot img, how do I do that?
[Xperia Z1 Q&A, Help & Troubleshooting] GetSAS:
Hi,

i've read through the forum but i'm not sure if it is the same problem, so i want to post it anyway, maybe someone can help.

My Z1 has the problem that it suddenly powers off, although the battery is nearly full (over 90%). It happens randomly when i open an app or when i just open the display.

here is a video i made:

[YOUTUBE]yYgRQL5nboI[/YOUTUBE]

and when i recharge it, it starts again with 1% although the whole charging takes about 20-30min till it says that it is full again.

what can be the cause for this?

OS is Android 5.0.1

Thanks
[Xperia Z1 Q&A, Help & Troubleshooting] GetSAS:
So, in the meanwhile i connected it with the Xperia Companion PC Software

which has the ability to check for updates and repair faulty OS..

So it updated to 5.1.1 but at the end it stucked when it should power on and boot.

Again, i pressed the red dot in micro Sim slot for about two minutes and connected it with the charger.

then it began to charge at 54% and at the end i could boot into the system again.

When i watched youtube vids at first it was ok, but after the fourth clip (between 4-8 min. clips)

the Z1 powered off again.

So, it seems to me that the battery makes the problem. It always has this problem when there is more power needed (watching youtube or running an power consuming app).

Then battery seems not to be able to maintain enough power.

In the internet i read about many dead sony xperias, which have similar problems.

In my case i need to be sure that the battery causes the problem, because changing the battery is not easy that way.

i already opened and changed batteries from smaller smartphones but this one is glued with adhesive and that makes it more tricky and takes more effort. So therefore it would be better to know that it's really the battery that makes the mess.

I already contacted Sony Support but no answer yet.
[Xperia Z1 Q&A, Help & Troubleshooting] Elysiumx:
Hi, i had the same issue on my old z1, it was starting to turn off at 30% of remaing battery, and after some time at 90% remaing battery it turned off.

I resolved by sent to change battery
[Xperia Z1 Q&A, Help & Troubleshooting] aaronguest:
I have the exact same problem! Anyways did you install any rom with any battery tweaks on your Z1?
[Xperia Z1 Q&A, Help & Troubleshooting] GetSAS:
No i never changed the rom or anything on this.

I just made an update with xperia companion, but nothing changed.
[Xperia Z1 Q&A, Help & Troubleshooting] GetSAS:
So how much will it at the end cost to let it change?

I can try to change it myself, but i don't want to risk anything if the cost-benefit difference is not too high.
[Xperia Z1 Q&A, Help & Troubleshooting] Elysiumx:
Hi, i found a web site which for 30€ replace battery and they did other repair service (in Italy)
[Xperia Z1 Q&A, Help & Troubleshooting] elepele:
Hey dude, you should change your battery,my brother had the same problem and only solution was replacing the battery now everything is fine Xperia works great widhout shutdown. Dont try tweaks it wont help you.

Best regards and hope you will fix it :)
[Xperia Z1 Q&A, Help & Troubleshooting] aquaboy11:
I had the exact same problem with 2 different Xperia Z1's. First it starts turning off around lower percentages like 10% or 20%. Then slowly but surely it will start shutting down at higher percentages. Eventually you will continuously need an external power source in order to use any application without it turning off. I've seen multiple threads of people describing the same problem. It seems like Sony produces their batteries to only last as long as the warranty, just like their updates.

Replacing the battery isn't too hard, just get one for like 15 euros, and also a T5/T6 screwdriver (perhaps included in a kit with prying tools) for like 5 euros. To open up the device, you'll need to use a hairdryer or something similar.

The process:

Use the hairdryer to heat up the upper-right corner of the backplate.

After heating it up for a bit, see if you can manage to lift up part of the backplate. If you feel like you need too much force, just apply some more heat.

Repeat 1 and 2 until you completely got off the backplate.

Get the screwdriver and unscrew all of the screws. No worries about sorting them, they're all the same size.

Disconnect the ribbon cable near the top that runs over the black frame.

Repeat proces 1 and 2 for the black frame, be careful not to break the plastic.

Disconnect the battery, pull it out, and insert the new one.

It's likely you broke the adhesive of the black frame, if you don't mind losing the waterproofness, you could just put back the frame without any adhesive.

Put back the screws.

Reconnect the ribbon cable from step 5.

If the adhesive on the backplate is still properly on it, heat up the backplate before putting it back on.

Put on the backplate, and slide your fingers across the edges with a bit of force to make sure it sticks well.

Just be patient and be careful not to apply too much force/heat and you'll be good.

If reusing the adhesive, there might be a chance it won't be as waterproof. Using new adhesive might help, but I can't guarantee it will.
[Xperia Z1 Q&A, Help & Troubleshooting] grizzlyspid86:
Replace the damn battery. Z1 battery lifecycle onle 3 years. Replaced mine and now its normal again. In Malaysia cost only RM100, include replacement service.
[Xperia Z1 Q&A, Help & Troubleshooting] GetSAS:
I replaced it already. It seems to be good now.
[Xperia Z1 Q&A, Help & Troubleshooting] grizzlyspid86:
Now we know that our Z1 battery lifecycle was pretty bad, lets not charge the phones many times, just charge it when battery goes lower than 15%....install greenify to improve battery usage...
[Xperia Z1 Q&A, Help & Troubleshooting] aksmzk:
Same exact issue with my z1, been a paper weight the past 2 years.

Picked up a battery from Amazon for 30 bucks same day shipping. The install was so easy, took 10 mins.

The unit has not crashed once since the new battery install, can use it as my back up phone now!
[Xperia Z1 Q&A, Help & Troubleshooting] GetSAS:
I ve made a pic to compare the old one with the new battery.

You can see that the old one is slightly more thick.

Old one is above.
[Networking] yonster:
I recently bought a new Asus router that allows me to use it as an Open VPN server.

Installed the Open VPN GUI/Apps on both Windows and Android devices, and both platforms were giving me full access to my Home network.

However, while the Windows devices still work 100%, all my Android devices are now barred from entering my Home network (though they allow general internet access through the server just fine).

Any ideas what's gone wrong on the Android side of things?

Thanks.
[Networking] weirdsciencex:
How are you connecting to your VPN server? Are your Android devices connected via wifi etc or are they using cellular networks to connect via your WAN

It sounds to me like a routing issue, for example your local network could be 192.168.1.0 and your VPN 10.0.0.1, so if your android device is connected via the 10. network unless routed it wouldn't know how to access your 192 network.

This seems like a similar issue, maybe you can find more help here: https://forums.openvpn.net/viewtopic.php?t=21311
[Networking] yonster:
Thanks for the reply, which I've only just had a chance to look at.

I can't get inside my network by neither cellular or wifi.

I'll have a good look at the link you've posted and report back.

I'm very much a network newbie and this has been very frustrating as it worked when I first set it up and now it doesn't, in spite of router factory resets.