I received an LG Fusic LX550 with my Sprint Plan about 6 months ago. There didn’t appear to be any simple way to put MP3 ringtones on it, unfortunately. After some research (mostly through Howard Forums), I found a way that I could get these ringtones onto the phone without a whole lot of trouble.
This tutorial requires
1) An MP3
2) An LG Fusic / LG FX550 phone.
3) Windows XP (untested otherwise)
4) USB Data Transfer Cable for the LG Fusic
First, prepare the mp3. You probably don’t want an 8 minute song as your mp3 ringtone. I’d suggest keep it at ~30 seconds maximum. If your phone rings for more than 30 seconds… you really don’t deserve a cell phone. I used WavePad trial edition, then very easily trimmed, adjusted volume levels, and resaved my mp3. You can go with low quality, since it’s on a cell phone. I encoded it at 128kbps, mono channel. Rename this saved file to “MP3.mid”.
Next, connect your phone to your Windows XP computer, and install drivers as necessary. My computer actually found the drivers on its own, here’s what I did. After it’s connected, right click on My Computer, go to Manage. Go to Device Manager and find the device that doesn’t have drivers installed (should have a yellow exclamation by it). Right click on it, select Update Driver. On the following screen, select “Yes, this time only”, for letting Windows Update search for a driver. Next check “Install the software automatically”, then click Next. When it finds it, the driver won’t be WHQL certified, so you’ll have to click “Continue” to let Windows install it. Wait a few minutes, and the driver should be installed. This might introduce a few more “Unknown” devices to the Device Manager, so repeat the same process until all relevant Devices have drivers installed.
Next, on the LG Fusic. Go to Tools => Music Composer => Compose Melody => Keyboard Mode. Play a key, then save it as MP3. We will be overwriting this and using it as the MP3 ringtone later.
Next, install BitPim for Windows XP. From their website, “BitPim allows synchronization of Phone Book, Calendar, WallPapers and RingTones and manipulating the embedded filesystem in CDMA cell phones”, but we’ll only be using it for last one, “manipulating the embedded filesystem in CDMA cell phones”. Once installed, assuming your phone is still connected via USB, setup and configure your phone. I knew mine was connected when it said “Other CDMA phone on COM6 - Detected”, with a green Circle next to it. Go to the View menu, and ensure that “View Filesystem” is checked. On the left pane you should see “Filesystem”, near the bottom. Open that, and in the next pane you should be able to navigate to “/melodyComposer”. Drag and drop “MP3.mid” from the first step into this window in BitPim, overwriting the existing file.
Finally, on the phone go to Settings => Sounds => Ringers => Caller ID => My Melodies => MP3.mid. And wha-la, presto, sha-zaam.
Worked for me as described. Let me know if your experience varies from the above.