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Root [Verizon] [How To][VZW]Fix Sluggish Or Broken Knock On

iowabowtech

root@android:/ #
May 2, 2010
12,187
8,698
Iowa|USA
So...My knock on feature was always kind of hit and miss. Sometimes I had to tap it several times, sometimes it'd only work in a certain portion of the screen. It worked but just not super consistently.

Recently, I flashed a G3 port and when returning back to my stock G2 rom, the knock on feature was broken entirely. So I applied a fix I spotted at XDA and I wish I'd have done this a long time ago! If your knock on is iffy, give it a shot. I can now tap twice at virtually any rate of speed within reason and it's instant results 100% of the time.


  • Download the hidden apk from the OP in THIS thread. (Thanks to xdabbeb for posting). If you're going to use a file explorer for the next part, downloading straight to the phone will save time.
  • Place the apk in /system/app, then change permission to rw-r-r or 0644 for those who think in numerical terms such as myself. Root Explorer or a similar root enabled file explorer can do this, or adb if you want to go old skool.
  • Reboot phone.
  • Either in adb shell or in Terminal Emulator (as #), enter the following:
Code:
am start -a android.intent.action.MAIN -n com.lge.hiddenmenu/com.lge.hiddenmenu.HiddenMenu
  • The hidden menu should now be visible. Now choose menu options HW device test > Touch test > Touch firmware upgrade.
  • Allow 10 seconds for upgrade countdown timer to expire.
  • Enjoy super sensitive knock on/off.
I can't guarantee it'll work as well for you as it did for me but if you're having to tap the heck out of the screen sometimes (especially for knock on which seems to be the greatest offender), then you may find this to be worth trying.
 

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