So far, nakawala ako sa bootloop, so I can backup my files and photos, but I can't say it's going to be permanent. I tried more than once and this method worked for me. I'm not sure though if someone posted this already or if you guys knew it already, but I just wanted to share this in case I can help. Send me feedback of what you think too if you can. Thank you.
What I've done was to take out the battery, the sim cards and the memory card from my LG-H818P (this could be optional), then I plugged the usb cord to the phone connecting to the socket or PC (this is better so I can back up data directly to my computer) without the battery inserted on the phone. What's going to happen when you do this is, the phone will tell you that it doesn't have a battery inserted on it (a big battery icon will be displayed in front with a question mark on it). Then, unplug the usb cord from the phone without leaving the socket or the PC, still without a battery wait until up to 3-5mins then plug it again. The phone will eventually boot up, LG logo will start to appear like normal, wait until it got passed by the LG Logo in the beginning and direct you through your home screen, then put the battery back on the phone while it's plugged still. If you can't get passed by the LG logo and got stuck in the loop, try it again, unplug the usb from the phone, wait a couple of minutes, plug it again, until it no longer says battery is missing and shows you the LG logo instead and let it direct you to your home screen. It will tell you once it's booted up that you have 50% battery displayed at the top, now it's okay and you can carry on from there, back up your files. But as soon as you unplug your phone from the usb, it'll tell you straight away that it's going to shutdown as there's an invalid battery. If you restart it, it'll just eventually get you stuck on it's fatal flaw, the ILAPO as it's called (Infinite loop Auto power off).
And so far, I'm still on it backing up my data, I can't afford to lose tons of memories made from my phone. I'm not sure if this is healthy for the phone but I found a way to start it all up again and I did it while I'm thinking of what to do next to sort this out myself, either I send it to LG service repair center or just buy a new phone, I don't know, since I'm already not covered by the warranty anymore and of course I miss using the phone, it was a fantastic experience for me using it right from the start. I thought I could carry on using it for a long time, but nonetheless, nothing last forever, so I must move on.
EDIT1: I let it connected to PC for more than an hour and it did not turn itself off. I guess pang-backup lang talaga 'tong ginawa ko.
balitaan mo kami 
