[Q] Device locked, no ADB, how to access recovery - General Questions and Answers

Hi,
I cheaply acquired a China 7"-tablet (Amoi Q50). Unfortunately, it is has a lockscreen activated and ADB not active. The former owner claims to having forgotten, anyway, he does not want to help...
The plan is now to access recovery and wipe user data. But...
I feel I tried every hardkey combo to access recovery, but any hint would be valuable and I will try again. (I have Power, Vol+, Vol- and a small reset knob on the back). I managed to access Android safe mode with Vol- during pwer up, but that has the lockscreen as well.
Is there a software (PC-side) way to access recovery mode or to wipe all user data without ADB active?
Would it help to force the tablet into download mode (like in Google?q=how-to-save-a-bricked-phone-with-paper-clips-and-pencil-graphite; yet I would use resistors)? What would I do then?
Help appreciated
denkbrett

Related

Phone Crashed in Ultra Power Saving Mode - Now Won't Boot

Hi,
I have a Stock SM-G920F which as per the title was in Ultra Power Mode. I came back to the device and found it virtually unresponsive so pressed the power button which offered allowed me to reboot, which I did.
It then got stuck for ages on the "Starting Apps" screen - so I pressed Power and Vol Down to reboot the device - since then it will just stick on the animated samsung screen indefinitely.
I can get into both recovery and download mode. I've tried wiping cache and also tried flashing the same Stock Firmware via ODIN but to no avail.
Of possible interest, I've tried to get it to boot into bootloader but it doesn't seem to do anything - however I have noted from the forums that this may be typical.
Smart Switch never seems to properly see my device, should it do this at the Samsung Screen, Download Mode or Stock Recovery?
Ive tried doing an "Emergency Initialisation" from Smart Switch but that gives a message of something like not available.
I want to avoid doing a hard reset / wipe at this point if at all possible - even if its just to get in once to back things up / mount and dump off via USB etc. before then wiping and trying to see if any of what I dumped off can be salvaged.
If anyone has any ideas that may help - please let me know
Thanks
Would you have enabled usb debugging mode on your phone? If so you can easily pull your data on your phone. If not flashing stock rom via odin should bring it back to life. The only data you will lose is contacts, messages and any app data. Photos and any other data should be fine. Paste the result of your odin try here....
I think I do have usb debugging on I think. How can I pull the data / mount the device? Is it from download mode, recovery or the Samsung boot screen?
I did flash the latest btu via Odin. It reported it worked ok but it still just hangs at the Samsung screen. I've tried leaving 20mins or so. That's long enough right?
Thanks
ok update.
it did get into android for a bit. it was ultra power mode though.
The settings menu was very limited so all i could do was lug it into my surface and pull off every visible file. i managed to get into ADB however it wouldn't let me do a backup. I was able to run off a bug report and a few odd commands however I wasnt sure what I could do whilst i was in ultra power saving mode.
just in case i can get back into ADB at somepoint -
are there any commands to get me out of ultra mode?
are there any commands to pull up a full settings menu rather than the really limited one of like 5 things?
can i backup anything else in the states i can get to - call log, contacts sms?
ta all
SlyTuk said:
ok update.
it did get into android for a bit. it was ultra power mode though.
The settings menu was very limited so all i could do was lug it into my surface and pull off every visible file. i managed to get into ADB however it wouldn't let me do a backup. I was able to run off a bug report and a few odd commands however I wasnt sure what I could do whilst i was in ultra power saving mode.
just in case i can get back into ADB at somepoint -
are there any commands to get me out of ultra mode?
are there any commands to pull up a full settings menu rather than the really limited one of like 5 things?
can i backup anything else in the states i can get to - call log, contacts sms?
ta all
Click to expand...
Click to collapse
Can you boot into Safe Mode ? : http://gadgetguideonline.com/galaxy...uides/how-to-use-samsung-galaxy-s6-safe-mode/
Turn off phone
HOLD Vol down and Power
Release Power at Samsung boot logo, keep Vol down pressed until the phone is completely booted
And turn off power saving mode ? : http://forums.androidcentral.com/samsung-galaxy-s5/493028-why-won-t-ultra-saving-mode-turn-off.html
Thanks Merken_
I was able to boot into safe mode. However from there, I could only disable safe mode, which forced a reboot that never worked.
Otherwise the settings are still just as limited and there is no launcher or anything.

Needed help to reset a phone (no access to OS, vol-+pwr not worked)

Hi. Have old desire s with graphical password is set, so no access to OS. I need to reset it but cant access fastboot for some reason. Is there any ways to reset phone?
Volume Down + Power Button - just boor device normally

[Completed] Device won't work, can't get into recovery mode

Hello, I have a big problem, I have a Plum Axe Plus 2, android 6.0, I wanted to root it so I unlocked the bootloader, (just that haven't root it yet), everything was working fine until I restarted the phone and it wouldn't pass from the logo screen, so I press volume down + power button and it appeared what I think is a virus (here is the video: youtube.com/watch?v=b18iDZZi0QA, I connect it to the PC and it recognize it, I could see the storage and everything so I manage to enter the recovery mode putting the adb reboot recovery command, I reset it and well I thought everything was fine now but when I power up the phone it stay on the logo again, I tried to enter the recovery mode but the same virus pop up, I connect it to PC and I still can access the storage but now it tells me that the device is unauthorized, so what can I do? how can I get rid of that virus ? please help me, I can't afford to buy a new phone.
Update: I manage to enter the recovery mode from the fastboot menu, so I could reset the phone again, but I don't even dare to power it off or restart in fear the same happens again, what should I do?
Hi !
Perform a factory reset , any virus you`ve got , though I doubt about it , will be erased

Factory reset locked device

I have my brothers phone which has been dormant for a couple years. He wants to use it again but forgets the unlock pin. How can I reset the phone e.g. through recovery mode etc. (by the way, I can't enter recovery mode from off state using power and -vol)
Can anyone help step me through it?
N.B. I can not use the main menu
Cheers

Need help with my Google FRP locked [non-rooted] LGL455DL

I made the mistake of Factory Resetting my phone after a few failed attempts at remembering the Pattern to unlock the phone, in doing so I ended up being stuck in the set-up process because I forgot the Google account I was logged into on it before the Factory Reset, had been an account I just quickly made on the spot months ago just to set up an app on it. I'm posting here for help with this since I'm on day 4 of trying to find a way to bypass this and my head is ready to explode. I feel like someone with a fresh mind would be able to point me in the right direction.
If anyone can let me know if I'm doing something wrong or missing some steps that will help me try any one of these, or honestly any advice at all... I'd very much appreciate it and it'd help relieve a huge chunk of this ridiculous headache this has all been.
Thanks in advance!
What I've tried thus far --
- I know for most ways around this, USB debugging needs to be enabled. But since I cannot get past the initial set-up process, I can't access the settings to enable it.
- I also know that for a lot of Android devices USB debugging is enabled by default in Recovery Mode but everywhere I've searched for the hardware combination to boot into Recovery/Download mode, all say the same thing:
Turn phone off > Power up with Vol. Down + Power button until 'Download Mode' is displayed (for boot into Download mode, while holding Vol. Down + Power button plug OTG cable into device)
- My problem with this is that on my device, Vol. Down + Power button, restarts the phone. So instead of 'Download Mode', I'm just restarting the phone over and over again. I was able to get my phone to boot into was Safe mode using the Power button + Side button.
- I've also tried getting around this through a series of steps which involved the 'TalkBack' accessibility feature, but when I try toggling to enable it I just get a message saying "Complete setup first to continue"
From there --
I started looking up Stock ROMs that I'd be able to just flash the firmware. But for the life of me, I cannot seem to find anything for this device. And this is where I'm pretty much at now.
To remove FRP lock you boot into phone's Recovery mode and apply
1. Wipe data
2. Factory Reset
Every Android device gets shipped by default with Android Recovery.
xXx yYy said:
To remove FRP lock you boot into phone's Recovery mode and apply
1. Wipe data
2. Factory Reset
Every Android device gets shipped by default with Android Recovery.
Click to expand...
Click to collapse
I can't get my device to boot into Recovery mode. Everywhere I look up, it tells me to Power off device, then Press Vol. Down + Power key until the menu appears. But on my device, all that combination does is force the phone to restart.

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