Stuck at multi-media on-vehicle screen, can't get to recovery - MTCB Android Head Units Q&A

I have a MTCB KGL that was running Android 4.2.2. I now flashed it to 4.4 with the Malaysk rom. The flash went ok (it said) but when it rebooted it was stuck at the first screen (kitkat logo shows, and 'multi-media on-vehicle is shown). I cannot get into recovery either, so I'm kind of stuck.
Is there some other way to reach recovery, besides trying all methods described below?
1 Press reset button and power button together
2 After about 5 secs release reset button, but keep pressing power button
3 When booting screen appears release power button.
4 It boots into recovery.
--Update 1-- some units without front USB have a different procedure
Firstly power on the unit and then long press the power button and then reset. Then the unit will get three rings and you loose your hand on the power button and short press the power button again. (thanx @netay)
--Update 2-- some others have this procedure (thanx @R4D3N)
1. Turn off the unit by holding 3-4 sec the power button.
2. Hold the RESET button + POWER button for 5 sec
3. Release the RESET button and keep pressing the POWER button for 2 sec
4. Release the POWER button and wait. The Recovery menu appears.
5. With the Volume knob you can move up/down and long press on Volume/Power button to select the option.
Click to expand...
Click to collapse

Do you have a hardware power button. I have kgl unit with hardware button and i can enter recovery by switching unit off then switching on by pressing and holding the power button for 10 - 15 seconds till the unit lights flash. Release button and unit boots into recovery.
Did you follow the update instructions exactly including wiping data before and after install from the recovery menu.
Sent from my SM-G920F using Tapatalk

gk66 said:
Do you have a hardware power button. I have kgl unit with hardware button and i can enter recovery by switching unit off then switching on by pressing and holding the power button for 10 - 15 seconds till the unit lights flash. Release button and unit boots into recovery.
Did you follow the update instructions exactly including wiping data before and after install from the recovery menu.
Sent from my SM-G920F using Tapatalk
Click to expand...
Click to collapse
Hi, thanks for the reply.
Yes, there is a hardware power button. I used it with the reset button before to get into recovery. But now it just hangs on the first screen. None of the 'known' methods of getting to recovery seem to work.
The power button works though. I can switch the device on/off, but that's about it.
I did follow the instructions correctly. I was not able to wipe data after the install because the device rebooted automatically after flashing, and then got stuck.

Related

How To Remove The Pattern Code or Password From Samsung Galaxy S4 I9505

If you forgot your screen lock combination or password follow these steps.
Warning !All data will be lost!
1.Press together volume up + home button + power button
2.Release your fingers of the phone when Samsung logo appear
3.Choose with volume buutons "wipe data/factory reset" and select it with power button
5.Choose "yes" with volume buttons and select it with power button
6.Wait untiil format is complete
7.Select "reboot"
mikidan said:
If you forgot your screen lock combination or password follow these steps.
Warning !All data will be lost!
1.Press together volume up + home button + power button
2.Release your fingers of the phone when Samsung logo appear
3.Choose with volume buutons "wipe data/factory reset" and select it with power button
5.Choose "yes" with volume buttons and select it with power button
6.Wait untiil format is complete
7.Select "reboot"
Click to expand...
Click to collapse
Pressing & holding down keys won't make any change my just reboots & reboot's again
tanveer4m said:
Pressing & holding down keys won't make any change my just reboots & reboot's again
Click to expand...
Click to collapse
boot to recovery, that's where it will take you
I'm seriously not trying to be a ****, but that's pretty useless information. Obviously a factory reset will remove the pattern or password, along with everything else. That would be a last-ditch option... when everything else fails, this will, without a doubt work. Also, to boot into recovery just hold power + volume up. No need to hold the home button, stand on your head, and do a split while singing Hotel California just to enter recovery.
Just FYI, by typing "remove pattern unlock android site:forum.xda-developers.com" in Google, it pulls up many various techniques of doing the same thing WITHOUT losing data.
tanveer4m said:
Pressing & holding down keys won't make any change my just reboots & reboot's again
Click to expand...
Click to collapse
My technique to boot into recovery / download mode:
1. Start with device all the way off.
2. Press and hold the volume down or volume up button as desired.
3. THEN Press and hold the power button until the system begins showing signs of life. Samsung logo or whatever. Release power button but keep holding volume button without fail.
4. When you get to recovery or download mode, release volume key.
If that doesn't work, consider you may have a button hardware failure or some serious other fault.
I used to have lots of trouble getting into recovery or download mode, because I tried to press power and volume keys at same time. That resulted in sporadic operation. Doing it as I describe above, starting with volume key, works every time.
Marc
Frankenscript said:
My technique to boot into recovery / download mode:
1. Start with device all the way off.
2. Press and hold the volume down or volume up button as desired.
3. THEN Press and hold the power button until the system begins showing signs of life. Samsung logo or whatever. Release power button but keep holding volume button without fail.
4. When you get to recovery or download mode, release volume key.
If that doesn't work, consider you may have a button hardware failure or some serious other fault.
I used to have lots of trouble getting into recovery or download mode, because I tried to press power and volume keys at same time. That resulted in sporadic operation. Doing it as I describe above, starting with volume key, works every time.
Marc
Click to expand...
Click to collapse
You don't need to hold volume up/down before pressing power, but it doesn't hurt. You can hold the power button until the device vibrates and let off. As soon as you feel the vibration, you can then switch to holding volume up until you see the blue text in the upper-left hand corner that says "Recovery booting." Once you see that blue text you can release the volume key and you will enter recovery mode every single time. Same way with download mode. Basically, as long as you're holding whichever volume button you want when the Galaxy S4 splash screen pops up, you will enter the corresponding mode. Also, there is no real need to start from the device being powered off completely. You can actually use your basic power menu (or advanced, depending on the ROM) and select Reboot/Restart and then hold the correct volume key when the screen powers off; although with an advanced power menu the option to boot to either is obviously both there and foolproof
I have never understood why people make entering download/recovery mode a lot more complicated than it actually is... I've never had trouble getting into download or recovery mode because it's not hard at all.
How to cancel pattern password
I have set a pettern password, and i do remember the pattern but i want to cancel the pattern password, i want to keep my phone lock free. please advise.
Munna_cse
Go to settings, lock screen, none.
No spinning on your head.
Pp.
mikidan said:
If you forgot your screen lock combination or password follow these steps.
Warning !All data will be lost!
1.Press together volume up + home button + power button
2.Release your fingers of the phone when Samsung logo appear
3.Choose with volume buutons "wipe data/factory reset" and select it with power button
5.Choose "yes" with volume buttons and select it with power button
6.Wait untiil format is complete
7.Select "reboot"
Click to expand...
Click to collapse
Or flash CWM, pull the /data/system/gesture.key file and open it with Revskills > Cryptoanalysis > Bruteforce android pattern lock (for pattern) - pull /data/system/password.key and /data/data/com.android.providers.settings/databases/settings.db and open them with Revskills > Cryptoanalysis > Bruteforce android passcode
You will just need to find a Revskills.zip with key latest version is 2.08.6
can u elaborate on this
When you can't boot into recovery you can wipe your phone with the computer using ODIN
If the person can boot the phone into recovery and perform a factory wipe, Odin is not required.

Stuck at Google logo after update

I just got my Nexus 7 an hour ago, once i setup with my google account then it asked me to install an update (apparently it says 4.3 update) so I let it do its job and left it there. Now it's stuck on Google logo for quite some time. This is weird for me since I didn't root or flash anything to it yet. Anyone facing the same problem?
EDIT: apparently it got to the X screen after i hold the power button and turn it on again. this is strange...the update shouldnt cause something like this to scare new users lol.
Hold down the power button 30-60 seconds until it reboots again. See if it goes through.
If not, boot into recovery and factory reset.
Power down tablet, Power+VolUp until you see Google, release buttons.
You'll see fallen android, in this exact sequence, Press and Hold Power, then press/release VolUp, then release Power.
You'll see a menu, press VolDown to scroll to wipe data factory reset. Press Power to select.
When it is done, Reboot should be selected, Press Power to select reboot.
sfhub said:
Power down tablet, Power+VolUp until you see Google, release buttons.
You'll see fallen android, in this exact sequence, Press and Hold Power, then press/release VolUp, then release Power.
You'll see a menu, press VolDown to scroll to wipe data factory reset. Press Power to select.
When it is done, Reboot should be selected, Press Power to select reboot.
Click to expand...
Click to collapse
Thank you very much, you said it very clearly, now my soft-bricked Nexus 7 flo works again:good::good::good::good::good:

[Q] F240L Stuck at bootscreen

my phone is stuck on bootscreen I tried flashing it following this method. Everything went successful but I can't go to recovery menu to reset the device cuz it's stuck on bootscreen. Anyone got any idea how to fix this?
I have found, on my phone anyway, that when you hold the volume down key and the power key it just sits there. I have to hold the buttons, let the power button go til I see the "LG" logo and hold the power button again. Then it gives me the factory reset screen. But you have to let go of the buttons as soon as you see this menu. Then you can hit power, hit power again, and it boots into recovery. Give that a try and see if it works.
cougar214 said:
I have found, on my phone anyway, that when you hold the volume down key and the power key it just sits there. I have to hold the buttons, let the power button go til I see the "LG" logo and hold the power button again. Then it gives me the factory reset screen. But you have to let go of the buttons as soon as you see this menu. Then you can hit power, hit power again, and it boots into recovery. Give that a try and see if it works.
Click to expand...
Click to collapse
ok so I hold down both power and volume down button then the lg logo showed up I released the power button and hold it again then the lg logo disappear and comes again and then it goes blank (um still holding both of the buttons) and the notification light keep on blinking. um really starting to get worried here I exchanged the phone with my galaxy s3 there is no way I cud return it now and I wudn't even try to re-flash it if it wasn't for the miui rom it had installed when I got it. I just want my phone to be at default 4.1.2 and now I'm clueless :crying:
however if I press and hold power and volume up button and when lg logo appear I keep pressing the volume up button rapidly this shows up:
http://gyazo.com/b49b6d1fe9e069446163af311befa8aa
i dont even know what it says its like in korean or something
That looks like the Korean download mode. When I use that method to get into recovery it's a bit tricky. I hold both buttons, nothing happens, while stil holding the volume down button, I let go of the power button just till I see the LG logo, then I hold the power button again til the small menu pops up. You have to let go of the buttons really quick when you see this menu because the power button and volume buttons are also the select button for this menu. Holding the buttons too long causes the menu to think you want to exit it....At least that's how it acts on my phone.
Remove battery, wait for 5 sec, attach battery again. press and hold power + volume down + home key, when you see reset option or recovery press power button to confirm and it will be fine.
Just try in the lg mobile support tool on top left and select update recovery the firmware will download and the phone will alobe get in the download mode and you don't have to do anything.
Sent from my LG-E986 using xda app-developers app

Device no longer boots or responds. Please help?

Here's what I did:
Had everything running fine with twrp installed and rooted.
Booted into twrp.
Wiped cache system and dalvik.
Restart.
Device wouldn't boot or go to recovery.
Attempt to follow THIS
Process fails.
Unplug device as instructions say.
Device battery dies.
Device will no longer boot into anything, including download mode.
Help?
cyrushehe said:
Here's what I did:
Had everything running fine with twrp installed and rooted.
Booted into twrp.
Wiped cache system and dalvik.
Restart.
Device wouldn't boot or go to recovery.
Attempt to follow THIS
Process fails.
Unplug device as instructions say.
Device battery dies.
Device will no longer boot into anything, including download mode.
Help?
Click to expand...
Click to collapse
Make sure your device is fully charged and turned off.
Simultaneously press and hold the power and volume down buttons.
When the LG logo shows up, release the power button only.
Now press and hold the power and volume up button while keeping your hold on the volume down button.
When the factory reset screen appears, release your hold on all buttons.
Press the power button to continue.
Press the power button again to confirm if you’re sure you wish to continue with the reset.
meanoc said:
Make sure your device is fully charged and turned off.
Simultaneously press and hold the power and volume down buttons.
When the LG logo shows up, release the power button only.
Now press and hold the power and volume up button while keeping your hold on the volume down button.
When the factory reset screen appears, release your hold on all buttons.
Press the power button to continue.
Press the power button again to confirm if you’re sure you wish to continue with the reset.
Click to expand...
Click to collapse
Hello, same thing happened to me yesterday night. I'm waiting for help... I can't even turn off the tab...
ruimiguel98 said:
Hello, same thing happened to me yesterday night. I'm waiting for help... I can't even turn off the tab...
Click to expand...
Click to collapse
Try holding down the power button for like 30 seconds.

How Do I Get In Recovery Mode?

I used "adb reboot recevery", it takes me to the laying android with "no command" but the old power button/volume nerve pinches don't seem to work to get to recovery.
fr4nk1yn said:
I used "adb reboot recevery", it takes me to the laying android with "no command" but the old power button/volume nerve pinches don't seem to work to get to recovery.
Click to expand...
Click to collapse
This is the most finicky device I've had for getting into recovery.
You need to hold power and then press volume up and immediately release both of them....just keep trying, it's very picky
skaforey said:
This is the most finicky device I've had for getting into recovery.
You need to hold power and then press volume up and immediately release both of them....just keep trying, it's very picky
Click to expand...
Click to collapse
that is insane. After about 8 tries of doing like you said I got it. Finally flashing 8.1.
This took me a few tries.
When the Android logo is displayed hold down the Power key for a few moments.
While still pressing the Power button press and release the Volume Up key.
The following steps worked for me (taken from AndroidExplained):
Pixel 2 Fastboot Mode
Press and hold the power button for a few seconds
Tap the Power Off option when the Power Menu appears
Wait for the Pixel 2 or Pixel 2 XL to completely turn off
Then press and hold the Power button and the Volume Down button at the same time
Continue holding these two buttons down until you boot into Fastboot Mode
rajeshr said:
The following steps worked for me (taken from AndroidExplained):
Pixel 2 Fastboot Mode
Press and hold the power button for a few seconds
Tap the Power Off option when the Power Menu appears
Wait for the Pixel 2 or Pixel 2 XL to completely turn off
Then press and hold the Power button and the Volume Down button at the same time
Continue holding these two buttons down until you boot into Fastboot Mode
Click to expand...
Click to collapse
That only gets you into fastboot. From there you will need to select recovery, then you will arrive at the dead android screen, at which time you will need to hold the power button, then while holding the power button, tap vol. up to enter recovery.
Verified instructions
Here are the instructions I pulled from a Google forum:
1. Press & hold the Volume down button. While holding Volume down, press & hold the Power button until the device turns on. You'll see the word "Start" with an arrow around it.
2. Press the Volume down button until you highlight "Recovery mode."
3. Press the Power button to start recovery mode. You'll see an image of an Android robot with a red exclamation mark.
4. Press & hold the Power button. While holding Power, press the Volume up button once. Then release Power.
chazall1 said:
This took me a few tries.
When the Android logo is displayed hold down the Power key for a few moments.
While still pressing the Power button press and release the Volume Up key.
Click to expand...
Click to collapse
This works like a charm on the P2.

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