UNBRICK LG Magna H502F Stock Rom
Requirements:
USB Cable
LG Driver
LG FlashTool
MegaLock.dll
H502F Stock ROM
Let's start
1.Install the LG Driver
2.Install LG FlashTool and don't run it yet
3.Copy MegaLock.dll and replace in the folder LG FlashTool (C:\LG\LGFlashTool)
4.Turn off your device(remove battery and put it back to be sure its off)
5.Press and Hold the Volume UP button,plug in the USB cable and hold until you see "Firmware Update" you are now in download mode
Don't plug into usb 3.0 port and try other ports if getting issues
6.Open Device Manager on your PC
Go on "Ports (COM & LPT)" if the driver is installed properly, you will see "LGE Mobile USB Serial Port (COMxx)"
We need to change the COM port number to 41
Double click on "LGE Mobile USB Serial Port"
Go to Port Settings Tab and click Advanced
Change COM Port Number to COM41 and click OK
Disconnect USB cable,wait a few seconds and reconnect or reboot back in download mode to check if the drivers are working properly
7.Open LG FlashTool as admin
Tick the Select Manual Mode box
Extract LG Magna H502F.rar
Click the DLL "....." button and select the DLL found in the extracted folder(LGH502f_20150416_LGFLASHv190.dll)
Click the S/W add button and select the file with the .tot extension(LGH502fAT-00-V10a-CIS-XX-MAR-16-2015+0.tot)
Don't touch anything else and press ok
Flashing will format the phone all data will be lost
8.Click on the Yellow Arrow Button at the top left and it will start the flashing process
When you see ready in a few seconds you will be asked to disconnect and reconnect the cable and it will start flashing
It will take some time
During the flashing process, the phone will reboot itself and will display "MiniOS Factory Reset Status".Don't worry about it
When you see pass in FlashTool and Factory Reset Status 3 on your phone means the flashing process is completed
Disconnect the cable and remove the battery
Power on your phone and enjoy your working phone again
(Don't forget to disconnect USB cable else if you didn't close the FlashTool it will go back in download mode and flash again)
Fixing problems
Factory Reset Status 2 and download fail
Method 1
1.Disconnect the cable and take out the battery after some seconds insert back
2.Press and hold both the power button and the volume down and hold until LG logo appears release the buttons and immediately press and hold both buttons again to go in Factory Reset
3.Choose Yes, then Yes again, the phone will reboot
Method 2
1.In step 7 where we are setting up the FlashTool change the action mode to Board DL instead of Upgrade DL
2.When the flashing is done your phone will reboot to the AAT Screen
3. Hold down power button and press normal boot (+power) your phone will reboot. (dont forget to disconnect usb cable or close the FlashTool)
sumber : xda
USB Cable
LG Driver
LG FlashTool
MegaLock.dll
H502F Stock ROM
Let's start
1.Install the LG Driver
2.Install LG FlashTool and don't run it yet
3.Copy MegaLock.dll and replace in the folder LG FlashTool (C:\LG\LGFlashTool)
4.Turn off your device(remove battery and put it back to be sure its off)
5.Press and Hold the Volume UP button,plug in the USB cable and hold until you see "Firmware Update" you are now in download mode
Don't plug into usb 3.0 port and try other ports if getting issues
6.Open Device Manager on your PC
Go on "Ports (COM & LPT)" if the driver is installed properly, you will see "LGE Mobile USB Serial Port (COMxx)"
We need to change the COM port number to 41
Double click on "LGE Mobile USB Serial Port"
Go to Port Settings Tab and click Advanced
Change COM Port Number to COM41 and click OK
Disconnect USB cable,wait a few seconds and reconnect or reboot back in download mode to check if the drivers are working properly
7.Open LG FlashTool as admin
Tick the Select Manual Mode box
Extract LG Magna H502F.rar
Click the DLL "....." button and select the DLL found in the extracted folder(LGH502f_20150416_LGFLASHv190.dll)
Click the S/W add button and select the file with the .tot extension(LGH502fAT-00-V10a-CIS-XX-MAR-16-2015+0.tot)
Don't touch anything else and press ok
Flashing will format the phone all data will be lost
8.Click on the Yellow Arrow Button at the top left and it will start the flashing process
When you see ready in a few seconds you will be asked to disconnect and reconnect the cable and it will start flashing
It will take some time
During the flashing process, the phone will reboot itself and will display "MiniOS Factory Reset Status".Don't worry about it
When you see pass in FlashTool and Factory Reset Status 3 on your phone means the flashing process is completed
Disconnect the cable and remove the battery
Power on your phone and enjoy your working phone again
(Don't forget to disconnect USB cable else if you didn't close the FlashTool it will go back in download mode and flash again)Fixing problems
Factory Reset Status 2 and download fail
Method 1
1.Disconnect the cable and take out the battery after some seconds insert back
2.Press and hold both the power button and the volume down and hold until LG logo appears release the buttons and immediately press and hold both buttons again to go in Factory Reset
3.Choose Yes, then Yes again, the phone will reboot
Method 2
1.In step 7 where we are setting up the FlashTool change the action mode to Board DL instead of Upgrade DL
2.When the flashing is done your phone will reboot to the AAT Screen
3. Hold down power button and press normal boot (+power) your phone will reboot. (dont forget to disconnect usb cable or close the FlashTool)
sumber : xda
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