Before changing the firmware, backup the original (Stock ROM) via CWM:
This is where you transform the Optimus Black into a semi-modern device. We will install a custom recovery (ClockworkMod) and then a custom ROM.
When the Optimus Black launched, it shipped with Android 2.2 Froyo. While competent, Froyo was quickly becoming outdated as competitors began pushing Android 2.3 (Gingerbread).
Early firmware versions on the P970 were known for a specific set of issues:
Stock firmware locks the bootloader. You must root first.
Install ZIP from SD card > Choose ZIP and flash the ROM first.GApps.zip.The biggest controversy regarding the P970’s firmware was the promise of Android 4.0 (Ice Cream Sandwich). firmware+change+update+on+lg+p970+optimus+black
Initially, LG announced that the Optimus Black was in line for the ICS update. Owners waited. And waited. Eventually, LG retracted the promise for many regions, citing hardware constraints (specifically the low amount of onboard NAND memory for the /system partition) and driver incompatibility with the TI OMAP processor.
While some specific regional variants (like specific
Updating the firmware on an LG P970 Optimus Black typically involves using the KDZ flashing method, as official over-the-air (OTA) update servers for older LG mobile devices have largely been decommissioned. Prerequisites & Preparation
Before starting, ensure you have backed up all essential data, as flashing firmware can result in data loss.
Battery Level: Ensure your device is charged to at least 80% to prevent it from powering off during the flash. Before changing the firmware, backup the original (Stock
KDZ Firmware File: Download the specific software version for your region/model. A reliable method is to check IMEI.info with your device's IMEI to find the correct software download link.
LG Drivers & Flashing Tool: Install the LG United Mobile Drivers and a tool such as HardReset_LG_Flasher (or LG Flash Tool 2014) on your computer. How to Flash the Firmware
Follow these steps to change or update the firmware via a computer:
Launch the Flasher Tool: Open the flasher software from its directory on your PC.
Select the Firmware: Load the downloaded .kdz firmware file into the software. Requirements: Root + custom recovery (CWM or TWRP for P970)
Connect Your Phone: Turn off your phone, then hold the Volume Up button while connecting it to the computer via USB to enter "Download Mode." Initiate the Flash:
Click on Normal Web Upgrade Test (this typically keeps your data, while "CSE Flash" performs a clean install). Select Upgrade Start when prompted.
Finalize Settings: In the pop-up window, clear the "Phone Software Update Registry," select "Different" for the Country, and choose "English" (or your preferred language), then click OK to begin the process.
Warning: Do not disconnect the device or close the software once the flashing process has started, as this may brick the phone. Troubleshooting & Legacy Limits
If the device becomes stuck in a boot loop after the update, you can perform a Factory Reset: Turn the phone off.
Press and hold the Volume Down + Power buttons until the LG logo appears, then release and immediately hold the Power button again until the reset screen shows.
Note that LG officially ended support for smartphone updates in mid-2025, so no newer Android OS versions beyond what was already released will be available through official channels. How change firmware in LG Phones, How To - HardReset.info