[Zenfone 2 Laser General] ezrawk:
I'm not responsible for any damage on your phone. Do it at your own risk. Don't come angry or get mad at me, because I'll totally ignore them. I'm just trying to help, if you think this is dangerous for your phone or not worth it, please do back down.

If my thread here is a duplicate, then please feel free to report it so it would be brought down.

I don't own this device, It was my friends device, and I just messed around with it because he bootlooped the phone by doing things without understanding'em. After getting frustrated over and over, suddenly an idea dawned inside my head to do 'what you're about to do' to your phone. This thread here is just to help other ZE500KG users that are as frustrated as I am (was). I didn't find any guide to unlock the ZE500KG here so I decided to do one. If anyone wants to redo this guide, feel free to do it! I'm just here to help even if with very limited knowledge and resources.

First of all, before reading or doing this guide, I'd like to give you a small note, I WON'T BE GIVING LINKS OF THE FILES ITSELF, please search them yourself, you've got google and the threads here (another reason why I'm not giving you links of the files is because my external HDD got corrupted and I lost nearly every file there is for the Z00RD). Plus I did this unlocking like 8-6 months ago, in frustration, so I've forgotten lots of things about the Z00RD.

Now I'd like to explain whats about to happen:

As you guys might know, the only official bootloader unlocking is only available for the Z00ED. What you are about to do is tricking the Z00RD as if it was Z00ED by flashing the Z00ED's stock recovery and flashing stock rom of Z00ED to Z00RD (I hope some users can automatically get the idea of what to do after reading this). After it boots just download the official unlock tool for Z00ED and unlock it. How is this possible? Currently Z00RD (ZE500KG) & Z00ED (ZE500KL) are siblings. They're using the same hardware inside, the only difference is in the camera and modem. So theoretically we can flash ROMs of Z00ED to Z00RD.

Prerequisites:

First of all, please download the respective stock recoveries of Z00ED as per current OS version. Search for them. There is a link somewhere in the forums, just try searching for it. If you're on Lollipop, download the LP stock recovery of Z00ED (ZE500KL) and if you're on Marshmallow download the MM stock recovery Z00ED. Technically this it's just upgrading to latest stock MM ROM.

Download the final stock rom for Z00ED in ASUS's Official Website

Download the official unlock tool for Z00ED that is in the ASUS Official Website too

Optional:

Download stock recovery and stock ROM of ZE500KG and after the unlocking process is finished try reverting back to stock ROM with stock recovery of ZE500KG <- Just incase you are afraid something will go wrong and don't know how to edit build.prop-s to change your device type.

MOST IMPORTANT IS THAT YOU UNDERSTAND & KNOW HOW TO USE ADB & FASTBOOT COMMANDS! I won't be helping you with this, because I'm pretty sure if you're here on XDA, it means you've done some research and pretty much have the knowledge to use the commands.

Okay lets get started:

Move the downloaded stock rom of Z00ED to your phone (I forgot if it has to be renamed and forgot if it has to be in internal or can be put to external) or you could just skip this and later on uise ADB commands to sideload the file.

Boot to fastboot mode / bootloader

Flash the stock recovery via fastboot

Boot to stock recovery that can be done via fastboot command 'fastboot boot' or manually doing it (I forgot the combinations, I'm pretty sure you guys have this covered)

Once it boots to recovery, install the stock rom of Z00ED that has been downloaded (I'd prefer using adb sideload, but it's up to you guys)

You don't have to wipe data, because if you're on MM the data will stay, if you came from LP, it'll be migrated.

Reboot the device and after it wait until it finishes booting (If you're lucky nothing would go wrong in this step)

After it finishes booting, just install the official unlock bootloader app that you've downloaded, open the app and follow the instructions.

Voila device will reboot and you've (somehow) officially unlocked the bootloader of ZE500KG! You're free to flash custom recoveries, custom roms and blablabla without any restriction!

This last step is optional:

If you're planning on sticking with stock ROM, I suggest you to revert back to ZE500KG stock ROM. I don't know if this is a must or optional, but for safety measures I did this to my friends phone.

Notes:

If you've tried rooting this phone via hotbooting a custom kernel (boot.img) that you've found in the threads here (Sorry if I'm not mentioning any names here) and have the fastboot error in every reboot, this will fix it, but if you plan on sticking with stock rom, you won't be able to flash SuperSU in it, because the su binaries will be occupied. On the other hand, MagiskSU works flawlessly.

If somehow this guide doesn't work for you, Try to do other things, or flash other stock recoveries of different stock rom releases of Z00ED. At least you've got the idea on how it works.

If nothing works for you, maybe you're just unlucky, because as usual, ASUS ships different variants of it's phone that may prove to be incompatible with my guide.

There you go! Happy unlocking! Sorry if my post was semi "TL : DR" or I don't reply your posts ASAP, I'm not always online on XDA. Just try your luck and give it a shot! Trial and error is bound to happen when you're dealing with Android phones. Good luck!