LG released the Gingerbread update in waves, and users quickly discovered that not all P970s were created equal. There were hardware revisions under the hood. Specifically, the phone was split into two main variants regarding the touchscreen hardware:
Inside CWM Recovery, use the volume keys to navigate and the power button to select: Select and confirm. Select Wipe Cache Partition and confirm. Go to advanced and select Wipe Dalvik Cache .
Choosing firmware/ROM
Updating or changing the firmware on your LG P970 Optimus Black can breathe new life into this classic device. Whether you choose the safer official route (which requires finding archived firmware since LG no longer supports the device) or the more adventurous path of custom ROMs, there is a solution for every comfort level. firmware+change+update+on+lg+p970+optimus+black
Set the Type to and PhoneMode to DIAG (or EMERGENCY if the phone is bricked).
Root your LG P970 using a compatible one-click root tool for your current software version.
This is the safest method, recommended for users who want official updates without risking a brick. LG released the Gingerbread update in waves, and
One of the most common issues users face is the dreaded "LG Security Error" or bootloop after a failed update. If your device gets stuck at the logo or refuses to boot, don't panic. Here is the most reliable method to fix it.
: Ensure your phone has at least 70% battery to prevent it from shutting down mid-flash.
: Load the downloaded .kdz firmware file into the software. Select Wipe Cache Partition and confirm
Remove the battery, wait 5 seconds, and reinsert it (do not power it on).
Select your preferred language and country in the final popup, then click . Wait for Completion :
For a true "change update," most users bypass stock and go straight to (Android 4.4.4).
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: Download the compatible custom ROM .zip file and the corresponding Google Apps (GApps) package. Move both files to the root directory of your external microSD card. Boot into Recovery Mode : Power down the phone.