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Lockdown active in unerolled devices

DP
Daniel Palmeira
Novozymes A/S

Hi all,

We have 2 TC8000 (Android 5.1, Agent 15.0.0 build 1110) and 1 TC8000 (Android 5.1, Agent 14.1.1 build 1003).

They all display as "Lockdown screen is not configured".
When I go into Admin Mode all 3 are showing as Not Enrolled and Agent Disconnected. Yet, the first two (with agent 15) are still showing in the Webconsole, but as offline.
When I try to go to the Home screen in Admin Mode, the devices go back to Lockdown screen.
I also cannot pull the top menu down, it's as the device is still in lockdown even in Admin mode.
Because of it, I cannot change, check any configuration (like confirm if they are in the right network) or push a factory reset.

I assume, because of the lockdown it will also not be possible to push the reset APK thru USB, as they don't have Developer Mode on, and can't go to the settings to activate.

Any suggestion on how to "unbrick" those devices?

MobiControl server version is 14.4.4.1045

not enrolled lockdown tc8000
2 years ago
SOTI MobiControl
ANSWERS
RS
Rafael Schäfer
2 years ago

You can leave lockdown mode with drawing a ^ on the screen and get prompted for the admin password then. I currently can't find the documentation for it. But it should be like this (attention: This can be really hard to be done and maybe multiple tries are needed):

DP
Daniel Palmeira
2 years ago

Thanks, I will try this on later. But is this like work around on switching modes? Because I can get in user mode by doing the regular way (holding the back button), but once there and I click the home button it just goes back...

RS
Rafael Schäfer
2 years ago

Maybe this is related to the MC Version you have. 

Holding back button long only works for me inside the Mobicontrol but not anymore in the lockdown if a lockdown profile was assigned to a device (it was possible in the past i know).

DP
Daniel Palmeira
2 years ago

Hm. I have difference on device bases, he have both TC8000 and TC77s.

In TC8000, I can change mode by pressing and holding the back button.
In TC77, I can change mode by pressing the square button.

Yet, for both I have to be at the lockdown main screen before doing this. If any app is open, I have to make sure to go back first...

RS
Rafael Schäfer
2 years ago

Or the difference is, that we use single app mode, so i can't go back to the lockdown screen where you can choose an app. So, i also can't check if there's still the possibility you have shown. That could be the difference.

But instead of going to the home screen when in admin mode, can you pull down the status bar and enter settings via the gear instead? Then you could wipe it via settings menu.

DP
Daniel Palmeira
2 years ago

No, unfortunately we have this locked...

RS
Rafael Schäfer
2 years ago

But also in admin mode?
If you lock it via a profile, this normally should be not the case for Admin. But if this is also locked... I don't have any other idea.

I assume you also locked the flash via SD-card?
If not, for Zebra devices you can put the relevant files for the wipe (example TC77: https://www.zebra.com/us/en/support-downloads/software/operating-system/tc77-operating-system-for-gms-devices.html) on the SD card and insert it into the device.
Then boot it into recovery mode and flash it as an update.


Otherwise your only chance is, if the devices have still warranty: Send them to repair.

DP
Daniel Palmeira
2 years ago

Yes, also in Admin mode, that is the odd part...like the devices keeps the lockdown control even in the Admin mode...

RS
Rafael Schäfer
2 years ago

So, how about the factory reset via SD-card as mentioned before?

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