Unable to flash stock ROM of Moto X Dev edition

I have a Motorola X 2013 Dev edition unlocked (XT1053) that I'm trying to flash the stock firmware onto after using Cyanogenmod12. However, the process is failing. Following Motorola's instructions... > After downloading the image for your device: > > 1. Make sure you have a Moto Pure Edition or a Developer Edition device. > 2. Make sure you download the corresponding recovery image from the above > portal. > 3. To flash, put the phone in fastboot mode: > 1. Power OFF your device > 2. Then Power ON + Volume Down > > Alternatively, you can reboot into fastboot mode if you have adb...adb reboot bootloader. > 4. Next flash the images using fastboot: >

>    $ fastboot flash partition gpt.bin
>    $ fastboot
>    $ flash motoboot motoboot.img
>    $ fastboot reboot-bootloader
>    $ fastboot flash logo logo.bin 
>    $ fastboot flash boot boot.img
>    $ fastboot flash recovery recovery.img
>    $ fastboot flash system system.img 
>    $ fastboot flash modem NON-HLOS.bin
>    $ fastboot erase modemst1
>    $ fastboot erase modemst2
>    $ fastboot flash fsg fsg.mbn
>    $ fastboot reboot
>

> You also have the option to erase all the data on your device with >

>    $ fastboot erase
>    $ fastboot erase cache
>

> 5. After performing this sequence, you can relock your device with >

>    $ fastboot oem lock
>

When I try to flash gpt.bin, the following error appears on my phone downgraded security version update gpt_main version failed preflash validation failed for GPT Now I've looked into this quite a bit and found that it is caused by Motorola's own security protections. The only thing I can find to get around it is waiting for the new security patches. However, those threads I find are pre dropped support. Cyanogenmod is probably responsible for this since it is still getting security patches. Therefore, there never will be an updated stock to flash. How do I get around this issue? I have a nandroid backup of the phone pre-Cyanogen, but I'd rather just flash a clean stock than use the backup if possible.