Develop Bugs

The story of me and my HTC Desire

After some negotiating with my girlfriend I decided I’d buy an Android phone, an HTC Desire from PDAShop.be, where I’ve bought my previous HTC Touch 3G.
As always, the delivery of the phone was quick and soon I unpacked the phone and started playing around with it. I improrted contacts from SIM to phone and linked them to Facebook and Twitter contacts. Piece of pie. I also installed some apps and games from the Android Market (no paid apps here in Belgium, yet) and fiddled around with them, as I also did with various settings in the HTC Sense UI.
After a few hours playing with the phone, I went outside with the phone in my back pocket of my jeans, and I heard the HTC startup again. I thought that somehow I managed to press the power button by accident. Nope, the phone restarted several times on different occasions.
When I went to sleep, the phone was on and the battery was almost charged to 60%. The next morning, 8 hours later, the device was turned off and when I charged it via USB on the PC, the battery was fully drained… 0%!
I then called HTC support, and the kind person on the other end of the line listened to my story and told me I needed a hard-reset of the device. From the mail he sent me:
With the phone turned off, press and hold the VOLUME DOWN button, and then briefly press the POWER button. 2. Wait for the screen with the 3 Android images to appear, and then release the VOLUME DOWN button. 3. Press VOLUME DOWN to select CLEAR STORAGE, and then press POWER. 4. When asked to confirm, press VOLUME UP
Click to expand...
Click to collapse
I tried that, but the phone just wouldn’t complete the hard-reset. So I called PDAShop and they told me that I could bring the phone in. I removed my SIM from Mobile Vikings and put it in my other phone and drove to them.
To my amazement the guy at the shop managed to hard-reset (without a SIM) the device, and stress-tested it with some rapid movements, changing styles in the UI, setting up a Live-wallpaper. The device didn’t freeze… So I drove back to home.
I put my SIM back in, and voila… the device started to hang on me again. I even tried the hard-reset with the SIM with no luck whatsoever. I contacted PDAShop again and the same person helped me further. He said I can send the phone back to them and they will replace it with a new one…
I really hope this isn’t becoming some part of long tragedy waiting to happen. I really want to enjoy this Android phone, as I am fed up with the current status of Windows Mobile on my brilliant HTC Touch 3G.

Hey
Sorry to heard your story, you must be very unlucky :/ . If it's of any comfort, my desire has a mobile vikings sim in it aswell and functions excellent, so it's probably a faulty model.

Sorry for you, it's probably a faulty device or a faulty ROM, either way, my phone and the ones of multiple other person works fine so keep hope!

I would advise you to recontact Coolbleu (aka pdashop) and tell them that you went there they did reset it and tested it but that it didn't fix the problem. I would be surprised if they wouldn't offer to give u a new one. (I bought several phones at coolbleu and I've always been happy with after sale support) BTW I'm also using Mobile Vikings (but on HTC Legend) and I don't have any problems with it at all.

@JonasDroid & @Cooki3s:
Good to know that, because the person at coolblue received some disturbing calls from people with MobileVikings SIM cards. How old are your SIM cards?
@All Thanks for the support, I really hope my next Desire will be somthing that I can actually enjoy
Will keep you posted.
Cheers!

I tried a hard reset again, but without a SIM and SD card inserted. This seemed to work.
I then did go through all the settings in the wizard and rebooted. Then I shut it down, inserted to SD again and I went into Settings > SD and Storage, unmounted the card, formatted it, and rebooted the phone. I stress-tested it for a while, and then I shut it down, inserted my SIM and it still works.
Could it be that some corrupt data on the card caused the instant reboots and faulty hard-resets?
I'm going to charge my phone and test it throughout the day to see if it still hangs/reboots on its own. Fingers crossed!
EDIT:
I spoke too soon... a few minutes later and the device was shut down when I tried to bring the screen back up. Now it reboots until it hangs itself... I don't hear the startup-sound either when it come to "Quitely Brilliant"
The phone will be sent back to pdashop!
Edit2:
I narrowed the problem down to a device-specific issue... It shuts down/freezes/reboots randomly even when no SIM and no SD card are in the device... I really hope the next device I'll receive doesn't have these issues

Have you got any apps installed on it? If so what? I had issues with some apps that changed the APN when the internet wasnt being used.

its a faulty device

langers1 said:
Have you got any apps installed on it? If so what? I had issues with some apps that changed the APN when the internet wasnt being used.
Click to expand...
Click to collapse
No external apps installed since first hard reset
dexteral said:
its a faulty device
Click to expand...
Click to collapse
That's what I thought also

Hey,
My SIM dates from early January this year.

I love my desire
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"lightbox_download": "Download",
"lightbox_share": "Share",
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"lightbox_new_window": "New window",
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I bought it unlocked no problems.

jimlad said:
I love my desire
I bought it unlocked no problems.
Click to expand...
Click to collapse
Very usefull and mature. We all thank you for enlightening us!

Data does not work on Nokia Lumia 900

Basically my Lumia 900 will not connect to the Internet even though I have full bars of LTE. This is not the first time it happened. It happened a few days ago and I rebooted it a few times and it started working again. This time I have rebooted it over 20 times changed the sim and it is still not working. I went to the AT&T store and the employees said they sent back over 7 defective lumias with the same issue.
I took out the sim and put it in my new iPad and LTE was working fine. I hope this defective is not spread across so many more devices or there will be a lot of unhappy customers.

Hey there. This might sound a little basic but do a master reset, and one more master reset immediately after. I had that problem for maybe a week and its a weird problem with COU provisioning. Also send the COU team an email about the issue, they might do some stuff on the back end as well for you.you are an art employee, right? How else would you have this phone
Sent from my Lumia 900 using XDA Windows Phone 7 App

vclifton said:
Hey there. This might sound a little basic but do a master reset, and one more master reset immediately after. I had that problem for maybe a week and its a weird problem with COU provisioning. Also send the COU team an email about the issue, they might do some stuff on the back end as well for you.you are an art employee, right? How else would you have this phone
Sent from my Lumia 900 using XDA Windows Phone 7 App
Click to expand...
Click to collapse
Yes it's my COU. Lol
I'll try the master reset, if not I'll contact the COU team. Thanks

Happened to me too. I just popped the sim card out while the phone was on. Put the card back in and then turned the phone off and then back on. Hopefully that fixes it for you. Did for me.
Nokia needs to put a soft reset button combination like the iPhone has since you can't do a battery pull. A soft reset is needed at some point in time on all smartphones. Not having a method to do it is a big error IMO.

wundrbread33 said:
Happened to me too. I just popped the sim card out while the phone was on. Put the card back in and then turned the phone off and then back on. Hopefully that fixes it for you. Did for me.
Nokia needs to put a soft reset button combination like the iPhone has since you can't do a battery pull. A soft reset is needed at some point in time on all smartphones. Not having a method to do it is a big error IMO.
Click to expand...
Click to collapse
anyone know if there is not a softkey combination.....or are we guessing?

Sounds like all you guys have a 900 already. What color, and what do you think?

Power for ~10 sec should reboot the phone
Sent from my SAMSUNG-SGH-I717 using Tapatalk

adiliyo said:
Power for ~10 sec should reboot the phone
Sent from my SAMSUNG-SGH-I717 using Tapatalk
Click to expand...
Click to collapse
thats what I thought too....but without the 900...couldnt repro

Hold power button for a few seconds and swipe down to turn off/soft reset. Or go to settings app; under settings go to 'About' and push 'reset phone' for hard reset.

They are looking for a reboot option, not a full reset. Something similar to holding the home and power key on an iPhone.
This is the first WP with non removable battery so I haven't had to do it before. I'm sure there's a way. I know if you hold the volume down, camera and power when it's off it will restore the phone.

We've been getting serious issues too. I'm getting a new lumia tomorrow. Ive tried everything.

waltah! said:
They are looking for a reboot option, not a full reset. Something similar to holding the home and power key on an iPhone.
This is the first WP with non removable battery so I haven't had to do it before. I'm sure there's a way. I know if you hold the volume down, camera and power when it's off it will restore the phone.
Click to expand...
Click to collapse
That's not a restore sequence. That will only place the phone in bootloader. If connected to a PC, and, a valid backup exists, a retire is possible. But that combination does not initiate a restore.
The only thing I've heard is extended holding of power key, ~10 seconds, initiates a reboot....not a reset or restore

http://nds1.nokia.com/files/support/nam/phones/guides/Nokia_900_UG_en-US_AT&T.pdf

alodar1 said:
That's not a restore sequence. That will only place the phone in bootloader. If connected to a PC, and, a valid backup exists, a retire is possible. But that combination does not initiate a restore.
The only thing I've heard is extended holding of power key, ~10 seconds, initiates a reboot....not a reset or restore
Click to expand...
Click to collapse
If you hold the power key down for about 15 seconds, the device will power down. I had a freeze during the initial setup on my 900....that worked for me....

The Lumia 800 also has a non-removable battery. Here's how to do a hard and soft reset using hardware keys on that device. May work on the 900:
Hard Reset:
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"lightbox_share": "Share",
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Or
Soft Reset (Restart):

my data isnt working

kenikh said:
The Lumia 800 also has a non-removable battery. Here's how to do a hard and soft reset using hardware keys on that device. May work on the 900:
Hard Reset:
Or
Soft Reset (Restart):
Click to expand...
Click to collapse
Those keys don't work on the 900.....Both combinations produce the same impact from a device that is power on...that is....off. The first action is the power slider....which can turn off the device. However, continue holding that combination will bring you to a OFF position. The same thing occurs with just holding the Power button for 10 seconds or so.
from an off position, I could not get those keys to react.

My data has been working great all day. Download a on of apps, browsed quite a bit to set up my bookmarks and downloaded music from Zune. My data speeds were around 25mbps all day.

Directly from the Nokia support site, reboot keystrokes.
http://www.nokia.com/us-en/support/...oting/?action=singleFAQ&caseid=FA132831_en_US
Hold power key, 8-12 seconds.

Out of the blue my Data started working fine. My rep stated thattheir Lumia 900's had problems provisioning correctly

Please Help Safe Mode Not Getting Disable !

Hey Guys ! Please Help Me !
My Phone Was Dropped And The Screen Got Cracked !
Then I Had A Replacement Of The Screen !
After The Screen Got Repair , There Is A Safe Mode Showing At Bottom Of The Screen !
Is There Any Way To Disable It ?
Please Help People !! Please..

MATHReX said:
Hey Guys ! Please Help Me !
My Phone Was Dropped And The Screen Got Cracked !
Then I Had A Replacement Of The Screen !
After The Screen Got Repair , There Is A Safe Mode Showing At Bottom Of The Screen !
Is There Any Way To Disable It ?
Please Help People !! Please..
Click to expand...
Click to collapse
1.Remove battery while device is on 2.Leave battery out for 1-2 minutes. (I usually do 2 minutes to be sure)
3.Place the battery back into the phone.
4.Push in the Power button to turn on
5.Let device power on without holding any buttons as normal Once the device is on the home screen, you should no longer see Safe mode. Hope this helps, good luck.

kenxda33 said:
1.Remove battery while device is on 2.Leave battery out for 1-2 minutes. (I usually do 2 minutes to be sure)
3.Place the battery back into the phone.
4.Push in the Power button to turn on
5.Let device power on without holding any buttons as normal Once the device is on the home screen, you should no longer see Safe mode. Hope this helps, good luck.
Click to expand...
Click to collapse
I have the same problem, I got stuck in safe mode after replacing my cracked screen.
I did exactly what is suggested by 'kenxda33' above
and I did the following too:
1) Factory Reset from the settings menu.
2) Wipe Partition and Reset through recovery mode,
3) Upgraded the phone to Android 4.2.2 using Odin
4) Dissembled the phone and removed the volume buttons and switched it on.
and still I have the same problem,

I have the exact same problem after replacing screen as well, did you guys find any resolution for this?

Take ur ph to the service center..they may help u..
Sent from my GT-I9082 using xda app-developers app

that happened after coming out from the SC
i want to know what was the resolution from the people who faced it

that happened after coming out from the SC
i want to know what was the resolution from the people who faced it

Hey,
I'm having the exact same issue . Wondering if you found a solution

I have the same issue, people says that our screem is not original so its the cause of the problem. But i hope someone can find the solution.

Unable to come out of safe mode after screen replacement
malshafai said:
I have the same problem, I got stuck in safe mode after replacing my cracked screen.
I did exactly what is suggested by 'kenxda33' above
and I did the following too:
1) Factory Reset from the settings menu.
2) Wipe Partition and Reset through recovery mode,
3) Upgraded the phone to Android 4.2.2 using Odin
4) Dissembled the phone and removed the volume buttons and switched it on.
and still I have the same problem,
Click to expand...
Click to collapse
---------------------------------
Hi,
Did you find any solution for this problem...
Coz i am facind the same problem...

There is nothing we can do about it?
I'm having the same problem here and i've tried everything.
I've tried kenxda33 solution and it worked... until i rebooted my phone.
I've tried wipe all, reinstall my rom, install other rom (like CM 11).
Isn't there any softmod solution for this? Like, disable safe mode for real?

Can anyone post a screenshot?
And possibly the only solution in SC. But you could try flashing with a stock untouched ROM.
Sent from my GT-I9082 using XDA Premium 4 mobile app

laurorual said:
There is nothing we can do about it?
I'm having the same problem here and i've tried everything.
I've tried kenxda33 solution and it worked... until i rebooted my phone.
I've tried wipe all, reinstall my rom, install other rom (like CM 11).
Isn't there any softmod solution for this? Like, disable safe mode for real?
Click to expand...
Click to collapse
Can you please post a screen shot of the problem..?
Sent from my GT-I9082 using XDA Premium 4 mobile app

DMJoh said:
Can anyone post a screenshot?
And possibly the only solution in SC. But you could try flashing with a stock untouched ROM.
Sent from my GT-I9082 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
SS:
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"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"
}
I've tried to flash stock untouched through Odin and still with the problem

laurorual said:
SS:
I've tried to flash stock untouched through Odin and still with the problem
Click to expand...
Click to collapse
And coming tohe fact, i understand you are well aware of the device and android, so am not going to explanations. So to disable safe mode, usually, keeping the battery away for a minute or two will do the job. But i guess this is not the case you have.
Just Try, Turn the phone off.Turn it back on and hold the “up” volume button.if this dont work, try holding volume up and down simultaneously whilte switching on. This is used to enable safe mode.
If u are on JB when phone is on, press the power key and hold the Power Off button on the screen for a few seconds, and see something is happening.
Unfortunately, after switching to safe-mode, a restart should disable the safe mode.

DMJoh said:
And coming tohe fact, i understand you are well aware of the device and android, so am not going to explanations. So to disable safe mode, usually, keeping the battery away for a minute or two will do the job. But i guess this is not the case you have.
Just Try, Turn the phone off.Turn it back on and hold the “up” volume button.if this dont work, try holding volume up and down simultaneously whilte switching on. This is used to enable safe mode.
If u are on JB when phone is on, press the power key and hold the Power Off button on the screen for a few seconds, and see something is happening.
Unfortunately, after switching to safe-mode, a restart should disable the safe mode.
Click to expand...
Click to collapse
still in safe mode
i'm starting to think this problem came to me after i changed the screen (it was broken)
maybe it is some HW problem?

laurorual said:
still in safe mode
i'm starting to think this problem came to me after i changed the screen (it was broken)
maybe it is some HW problem?
Click to expand...
Click to collapse
A hardware problem may not cause phone to boot in to safe mode i think. If possible.. Carry it to a service centre.

May be, it's happening because of a kind of short-circuit. Once, I also faced almost the same kind of issue. In my case, almost 2 years ago, my old smartphone (GT-S6802) was again and again going into Download Mode whenever I tried to power on the smartphone. Then I took it to the SC. And they discovered that the reason behind it was an electrical short-circuit. They worked on it, and my problem was resolved. Therefore, I'd like to suggest whoever facing such issues, to take their smartphone to the SC and your problem will surely be resolved.

Solution found at last
Solution is here
So don't worry guys anymore
It's not a big deal as some of you guys say
I had my touch replaced n had the same trouble
I simply switched it off n interchange both sims with each other (means put sim 1 into the slot of sim 2 n vice versa.)
It became OK
U can also try removing Sim 1 n letting the slot empty n using only sim2 in its slot

How to get out safe mode LG Optimus L9
MATHReX said:
Hey Guys ! Please Help Me !
My Phone Was Dropped And The Screen Got Cracked !
Then I Had A Replacement Of The Screen !
After The Screen Got Repair , There Is A Safe Mode Showing At Bottom Of The Screen !
Is There Any Way To Disable It ?
Please Help People !! Please..
Click to expand...
Click to collapse
I JUST got out of safe mode after looking and searching for several weeks. I went to TMobile Manage My Account and did backwards how they showed turning ON safe mode....1. turn off your phone. 2. turn your phone on THEN when the phone logo appears, immediately let go of power button and then hold down VOLUME UP button till screen comes on. Sheesh, I'm glad to be done with this!

Wifi and USB not working

Hello:
I have a Pumpkin head unit Model S07 - MTCB-KLD2 migrated to Malaysk ROM 4.4.4, and everything was working until suddenly the internal WIFI didn't work anymore.
Decided to make a new upgrade, I have actually the Lollipop Android 5.1 Malaysk ROM for RK3188 1024x600, and I wasn't able to had the Wifi working. After reading posts in this Forum I've got the chance to put a Wifi USB dongle into one of the USB external ports, and for my surprise I've just discovered that both USB's are not working anymore, so actually I have a broken radio in actual state.
I've also noticed that the internal beep sound has changed to a new one, and furthermore whenever i try to get into the Recovery mode pressing until the three beeps come out, 2 seconds after this 3 beeps sounds a long beep, and the bootup menu doesn't show, so I couldn't try to update the firmware anymore.
Did you think that going back to the original Pumpkin firmware will solve the problem? Is the WIFI faulty, as I've read before, so common in these units, and there is not any workaround possible to fix it? What about the USB's broken how could I check it up? Anyone know if there exists any APP to check system LOG faults to try to guess the workarounds with all this faulty hardware? Exactly one year after I' ve bought the unit is starting to give the problems I mentioned before, programmmatic obsolescence?
Thanks for the hard work!!!!
Greetz from Madrid.

Nobody?
twelvemonkeys said:
Hello:
I have a Pumpkin head unit Model S07 - MTCB-KLD2 migrated to Malaysk ROM 4.4.4, and everything was working until suddenly the internal WIFI didn't work anymore.
Decided to make a new upgrade, I have actually the Lollipop Android 5.1 Malaysk ROM for RK3188 1024x600, and I wasn't able to had the Wifi working. After reading posts in this Forum I've got the chance to put a Wifi USB dongle into one of the USB external ports, and for my surprise I've just discovered that both USB's are not working anymore, so actually I have a broken radio in actual state.
I've also noticed that the internal beep sound has changed to a new one, and furthermore whenever i try to get into the Recovery mode pressing until the three beeps come out, 2 seconds after this 3 beeps sounds a long beep, and the bootup menu doesn't show, so I couldn't try to update the firmware anymore.
Did you think that going back to the original Pumpkin firmware will solve the problem? Is the WIFI faulty, as I've read before, so common in these units, and there is not any workaround possible to fix it? What about the USB's broken how could I check it up? Anyone know if there exists any APP to check system LOG faults to try to guess the workarounds with all this faulty hardware? Exactly one year after I' ve bought the unit is starting to give the problems I mentioned before, programmmatic obsolescence?
Thanks for the hard work!!!!
Greetz from Madrid.
Click to expand...
Click to collapse

http://www.autopumpkin.com/forum/viewtopic.php?f=3&t=777

As you could suppose I've read it, the problem is the USB malfunction that doesn't allow the workaround showed there.
Here there's a LogCat of the system when WIFI enabled:
paste board . co / n8j6icCLW.jpg

I've written in many forums as it's supposed to be a generelized problem with resellers as Eonon, Joying, Pumpkin (mine), and all those HuiFei type brands. Some of them tried a workaround setting the Date/Time not to be automatic and fied the Wifi, but no chance whenever USB/Wifi are both broken. The Pumpkin reseller asked to return the HA and charging for the fix of the PCB!!!, it sounds like I have to open up the HA, dismantle it and send it back to factory to fix. My unit it's actually exactly 1 year old, and I will be without radio until receivng it, wait for fix and resend it to me from China, charging me with a repair fee and the billing costs, and no radio plugged in my car!

Wifi and USB Fixed
Finally I've got the solution with the unvaluable Help from ZelenyR that helped me on the full process.
I've guessed that some internal resistance, capacitor, inductor was burnt, and tried to find following the PCB routes all over the circuit what in the hell were, tried to find a little burn in some of them and find finally that a small inductor L9 (all of them are inductors beginning with a 'L') did not showed on the multimeter as nornally should do, verified that is a component very sensible to tensions peaks produced because of over tension when connecting external USB electronics such as a mobile, or ext HDD. On ZelenyR's words: "The problem is inductance which you need. I used 220nH for 3.5Amp main parameter was max current over 3Amps to be sure that it will not burn again. Easiest way is just simply short this component but I don´t recommend it because it is not safe and can go to bigger damage in case of overloading USB and also it is necessary to block supply noise going to WiFi ."
Thanks to him I'm actually repaired my init luckily!!! and saved 100€ and 3 months without the unit.
Greetz

Bad eyes
I have same problem after iphone 4 was connected thru usb interface, wifi is off and cant be ON. Where is L9 located ? Try to find it about an hour...

this is....
SwIFTop said:
I have same problem after iphone 4 was connected thru usb interface, wifi is off and cant be ON. Where is L9 located ? Try to find it about an hour...
Click to expand...
Click to collapse
It's located as L19 you could see that is slightly brown (it means it's burnt) at the middle bottom of the image in a row that reads: "C103 Q9 R134 L19 R131 Q6 R128"
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twelvemonkeys said:
It's located as L19 you could see that is slightly brown (it means it's burnt) at the middle bottom of the image in a row that reads: "C103 Q9 R134 L19 R131 Q6 R128"
Click to expand...
Click to collapse
Can you mark the on the picture where the burn is? I cant see anything by L19 just the writing.

typos1 said:
Can you mark the on the picture where the burn is? I cant see anything by L19 just the writing.
Click to expand...
Click to collapse
Oh dear!! count the chips!! the legends are in the same row(1st legend, first chip, 2nd legend 2nd chip,...), it's the fourth one chip

twelvemonkeys said:
Oh dear!! count the chips!! the legends are in the same row(1st legend, first chip, 2nd legend 2nd chip,...), it's the fourth one chip
Click to expand...
Click to collapse
Chips ? Youre not talking about chips youre talking about an inducter. I can see the legends but nothing near them to show what the legend is referring to. And besides, the quote in your post says its "L9" not "L19" as you say.
Can you mark on the picture where ? I am not thinking of me, but or anyone who reads this to be able to see for reference should it happen to someone else.

Same thing happened to mine. My wifi and both usb doesn't work anymore after 8 months of use. 11-RQ0369E-US part number. I wonder if the board is the same as mine. I haven't open it yet, just wanted to confirm that it's something within the board. Everything else works except what I've described. I usually would play music through the usb. Where did you get the inductor?

za_ny said:
Same thing happened to mine. My wifi and both usb doesn't work anymore after 8 months of use. 11-RQ0369E-US part number. I wonder if the board is the same as mine. I haven't open it yet, just wanted to confirm that it's something within the board. Everything else works except what I've described. I usually would play music through the usb. Where did you get the inductor?
Click to expand...
Click to collapse
Have you tried updating the MCU ?

typos1 said:
Have you tried updating the MCU ?
Click to expand...
Click to collapse
No, I haven't. How would I do that, unless I use a sd card. Where would I get the update if there was one. I'm running the 5.1

za_ny said:
No, I haven't. How would I do that, unless I use a sd card. Where would I get the update if there was one. I'm running the 5.1
Click to expand...
Click to collapse
It doesnt matter what Android version youre running. MCUs are in the links in my signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB

typos1 said:
It doesnt matter what Android version youre running. MCUs are in the links in my signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB
Click to expand...
Click to collapse
signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB[/QUOTE]
I see the firmware but it's kind of confusing me though. My MCU version is MTCC-KLD6-V2.91 May 31 2016. So I would have to download the MTCB-MTCC_lolipop_5.1.1 but noticed there are a custom and official. Should I download the official one? Thanks.

za_ny said:
signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB
Click to expand...
Click to collapse
I see the firmware but it's kind of confusing me though. My MCU version is MTCC-KLD6-V2.91 May 31 2016. So I would have to download the MTCB-MTCC_lolipop_5.1.1 but noticed there are a custom and official. Should I download the official one? Thanks.[/QUOTE]
Neither, the MCU is separate from the ROM, I suggestd you try updating the MCU not the ROM, updating your ROM will likely not help your problem.
Try the MCUs attached, the later one first, if you get any problems try the earlier one.

Try the MCUs attached, the later one first, if you get any problems try the earlier one.[/QUOTE]
I've tried both of them and I still see the wifi being off and the USB doesn't work as well. Thank you for your time though, I appreciate it.

za_ny said:
Try the MCUs attached, the later one first, if you get any problems try the earlier one.
Click to expand...
Click to collapse
I've tried both of them and I still see the wifi being off and the USB doesn't work as well. Thank you for your time though, I appreciate it.[/QUOTE]
That was just the first thing to try.
When you say "the wifi being off", what happens when you turn it on ? USB is always not very good for various reasons, adding more power to it may help.

That was just the first thing to try.
When you say "the wifi being off", what happens when you turn it on ? USB is always not very good for various reasons, adding more power to it may help.[/QUOTE]
The wifi remains grey out in the on position, then it goes back to being off again. Before when it wasn't broken, I could turn it on and it would search for wifi but not anymore. For the USB, I can no longer use it at all. I was reading the circuit board share the same circuit so it wouldn't surprise me if it needs one because both the wifi and usb failed and stopped at the same time while driving.

MTCD unit does not start

Hello everyone, I have a PX3 unit, Android 5.1.1 and MTCD_KD_V1.82_1 MCU version. It is car-specific (Suzuki Swift 2007) with physical buttons on its faceplate.
Suddenly (without any software or hardware modification) it decided never to start again. Short pressing the power button does nothing at all. Short pressing the reset button flash the leds for a second, but nothing else happens and the screen remains black. Putting the reverse gear (I have a rear camera installed) does not activate the rear camera input too.
I have already tried disconnecting its power completely.
I tried to enter the recovery mode by keeping the power button pressed. After about 15 seconds the leds flash 3 times and then they stay on as long as I keep the power button pressed. I tried pressing the power button for 3 seconds right after the 3 led blinks, but I wasn't successful. I tried many times long press the power button for 15 seconds and a short press right after the 3 led blinks. No success. Anyone knows what is the procedure for entering the recovery mode on KD units? I also tried keeping the reset button pressed for long time, nothing happened. Right now that I am writing these lines (the last move I made was short pressing the reset button), it blinks the leds once every 1 minute exactly.
If I enter a cd in the disk tray, it loads it inside its mechanism, and it ejects it when I press the eject button. But nothing more. Screen always remains black.
Any ideas?

nobody?
does my problem seem to be on the SoM or mainboard?

anyone knows if I can't get in Recovery Mode, is this a problem of the MCU or the SoM ?

Hi mate, have a similar situation. Do you solve it?

Probably the problem occurs in the SOM.
If the LEDs are blinking, loading/unloading the DVD/CD means that the MCU works.

What did the reseller suggest when you contacted support?

marchnz said:
What did the reseller suggest when you contacted support?
Click to expand...
Click to collapse
Well, they suggest to make some tests. One with the reset and power button, that result doing nothing, just a buttons light blink after release. And the other is make a bridge between BATT+ and ACC on cambus female connector (without cambus connected) and try to power on, but nothing happen too.
I test voltage on terminals, harness wires, fuse.. all ok.
Was strage that after 3 days of this problem, finishing a ride, HU wake up. Day after that, dont power on anymore.
Any suggestion is welcome Marchnz. Essentially if open the chassis is needed.
Thanks in advance!
Pol

Have you tried to press buttons on the display (where they were supposed to be) in order to check if display is failed only but the unit is working?
connecting a USB with music should it open autmatically the mp3 player and so on...
I did suffere that similar situation and myunit was responsive to touch but no display.

ikerg said:
Have you tried to press buttons on the display (where they were supposed to be) in order to check if display is failed only but the unit is working?
connecting a USB with music should it open autmatically the mp3 player and so on...
I did suffere that similar situation and myunit was responsive to touch but no display.
Click to expand...
Click to collapse
Thanks mate, and yes, I try, but doesn't work. Is completely dead. Now Im asking me if is a electronics failure or a brick...
Thanks for your suggestion.
P

Well, tech support of reseller determine that SOM have some problem... but guess what... they cant repair it cose my MTCD 2017 is discontinued!!! jaja oh god!
They offer me to buy a new one at half price. I live in Argentina and shipping will kill me.. so, I would need some help here open the unit and check components and soldering points.. is there some caritative soul who can help me or guide me a little?
Thanks in advance!

polgoz said:
Well, tech support of reseller determine that SOM have some problem... but guess what... they cant repair it cose my MTCD 2017 is discontinued!!! jaja oh god!
They offer me to buy a new one at half price. I live in Argentina and shipping will kill me.. so, I would need some help here open the unit and check components and soldering points.. is there some caritative soul who can help me or guide me a little?
Thanks in advance!
Click to expand...
Click to collapse
Show us your board, we will show you ours =)
I have a similar problem at the moment, last week some smd component burnt because of all the heat / temperature here in germany =)

Thanks mate, here some pics of the HU opened. No melt components. no soldering fails at first view.. not changes making percusive hits over components.. Im lost...
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"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
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that looks strange for me from here =)
EDIT: ahh nevermind, i think it has circuits for a transistor or similar but may be ok, still is the soldering ok there or did it get loose?
EDIT2: what i also had, try putting pressure on the midst of the contacts of the SoM and try to turn it on, what you also can do is to apply power and put some force on the contacts from left to right to maybe find out that it turns on suddenly =)

Kayhan 17# said:
that looks strange for me from here =)
EDIT: ahh nevermind, i think it has circuits for a transistor or similar but may be ok, still is the soldering ok there or did it get loose?
EDIT2: what i also had, try putting pressure on the midst of the contacts of the SoM and try to turn it on, what you also can do is to apply power and put some force on the contacts from left to right to maybe find out that it turns on suddenly =)
Click to expand...
Click to collapse
I did it, I press everywhere looking for a bad contact, but nothing. What I suspect is about the source DC input, some capasitor, Zener, or diode.
Because the Hu history tells about first day of no power, second day no power till suddenly reacts an power on alone. Third and beyond never power on again.. so.. if SOM is melted or bad, this resurrection randomly doesn't have explanation.

Oh, do you have sd cards inserted? Remove them and give a go?

Kayhan 17# said:
Oh, do you have sd cards inserted? Remove them and give a go?
Click to expand...
Click to collapse
Do you think this sd cards would be a problem to power on? I dont think so..
When I connect and desconnect the power supply from the board., HU reactos power on the button leds and immediately it power off and nothing more happen.

I had similar issues, remove cards and try if it works. I couldnt believe either ...

Kayhan 17# said:
I had similar issues, remove cards and try if it works. I couldnt believe either ...
Click to expand...
Click to collapse
Thanks for your help. Did you thinking on buy a PX5 4g SOM to replace the "bad" one?

@marchnz, im planing to apply your flash OTG method. Do you think it can work for my lock HU?
https://forum.xda-developers.com/android-auto/mtcd-hardware-development/px3-5-headunit-mod-recover-flash-som-t3766892