Tip & How-To about LG GD510 Cell Phone

How to backup cust in lg pop (lg gd510) cell phone.

Download lg utilities from the link provided below.


Next, ensure your phone is switched ON, then remove your battery and SIM card (and memory card if you have one), and insert only your battery. This will turn off your phone, but don't turn it back on.
Now you must type exactly this into LG-Utils-0.4.2. It IS CasE sEnsETivE. "\" or "Backslash" can be found in between "Z" and "Shift (Up arrow)" on the bottom left of the keyboard.

\ \. \ USB1 [ENTER]
C: \ GD510.flb [ENTER]
CUST [Don't press ENTER]

Plug the USB end of the cable into your computer, but NOT the micro USB into the phone. Open up the small flap on the side of the phone that protects the micro USB. Press "ENTER" and QUICKLY insert the other end of the USB cable into your phone. Now wait for about 5 minutes.
After 5 Minutes, the program will come up with an error. As long as it has been about 5 minutes, this is normal. Once it has finished, you can disconnect your phone. Remove the battery again, and insert it. Turn your phone on.

Minimise LG-Utils-0.4.2, and go into "C Drive". You will now see a new file, called CUST.big. This should be 133MB in size. DO NOT DELETE THIS FILE!!! You must make a backup copy of this file. Create a new folder anywhere on your computer, called "CUST Backup". Copy the CUST.big file, and paste it into your new folder. This may take a few moments.

Thus the backup is taken.

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