How to bypass lock screen in Cyanogenmod 7.2

Question

I set up my phone to use a gesture based unlock, and told it to hide the unlock button. Now the gesture isn't working and I can't get past the lock screen. For the standard Android lock screen, there is a feature whereby if you enter the wrong pass code 5 times, you can press a button to enter the username and password of your Android account to reset the lock screen. Is there any way to do this, or any other way to bypass the lock screen on Cyanogenmod 7.2? I have adb shell access to the device.

I'd think it would work similarly provided that you have the Google apps package installed (as described in Recovering from forgotten lock pattern). Is that option unavailable to you? — eldarerathis, Jun 18 '12 at 22:43
That's correct. The Cyanogenmod gesture lock screen has no such button available. — Christi, Jun 18 '12 at 22:50
Havent tried yet, but search for 'lockscreen adb settings.db'. best answer i found: http://rootzwiki.com/topic/8576-cm7-disable-lockscreen/ — ce4, Jun 18 '12 at 23:18

score 5 · Answer 1 · edited Jun 24 '12 at 17:59

5

The answer to this question is hideously complex. It requires ADB set up on your mobile and PC. Cyanogenmod enables adb on the device by default. Instructions for setting adb up on the PC can be found here.

With the phone connected to the PC, using a command prompt go to the directory containing adb, and start a shell. On my system the command to do this is as follows, but it may be different on yours.

cd "\Program Files (x86)\Android\android-sdk\platform-tools"
adb shell

You will then get a prompt consisting of a single # if all is well. Enter the following command:

sqlite3 /data/data/com.android.providers.settings/databases/settings.db

The prompt will then change to

sqllite>

Enter the command

select * from secure;

This will produce a list of parameters. The one you are looking for will be something like:

440|lockscreen_gestures_disable_unlock|1

The number on the left hand side is an <id> which varies from phone to phone. The next command is then

update secure set value=0 where _id=<id>;

So in this example the command would be

update secure set value=0 where _id=440;

Reboot the phone, and the unlock button will have returned and you will have access to the phone again.

edited Jun 24 '12 at 17:59

eldarerathis

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answered Jun 18 '12 at 23:57

Christi

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Not that complex.. but good to know. – user606723 Jun 19 '12 at 17:04
@user606723 - Given the time between the questioner asking the question and answering it themselves I can only guess that while the answer doesn't look very complex, it took some considerable time to work out that relatively simple solution. Shame that you weren't around earlier to answer the question sooner. – Mark Booth Jun 20 '12 at 22:42
@MarkBooth, obscure would be a much better adjective. In fact, hideously obscure would be quite accurate. :) – user606723 Jun 21 '12 at 14:38
@Mark Complex would be having to compile a modified version of the framework and pushing that. This is just plain obscure. – Jun 24 '12 at 17:11
On my Cyanogen 7.2 device I also had the key 360|lockscreen.lockedoutpermanently|1 which needed to be set to 0. – Jun 24 '12 at 15:03
That key doesn't exist on android 5.1 (CM 12), so I set lockscreen.disabled to 1 but that didn't work. – ayke Jul 22 '15 at 09:14
http://stackoverflow.com/questions/22142940/set-lockscreen-to-none-programatically helped me unlock my device :) – ayke Jul 22 '15 at 09:25

score 0 · Answer 2 · answered Jun 25 '18 at 16:35

Here's how I cleared the screen lock password on my phone running CyanogenMod 11:

Boot into TeamWin (or other adb-enabled) recovery,
Connect the USB cable on the computer, then perform:

sudo -i
adb -d shell
mount /data
cd /data/system
rm gesture.key
rm password.key

reboot

How to bypass lock screen in Cyanogenmod 7.2

2 Answers2