Bootloop after installing a 5.1 ROM over a Stock 4.4.4 ROM.

here's what i did: i installed Microkat on a XT1068 with 48.86 bootloader, i formated my internal storage and my micro SD a day after. Today i was looking for a 5.1 ROM and i found a new SlimLP update, so i wanted to install it, and i did. The ROM booted up but there was something wrong, the wallpaper was the same i used on Microkat ( i did a clean install ), the launcher was Nova Launcher, the same launcher MicroKat uses, and some of my old apps where there, i don't know how it happened. So android.acore was FCing, so i went to TWRP and formated everyrhing and installed the ROM again. The rom doesn't booted up anymore, and i don't have a PC to save my phone, there is any way to save it without a PC? I know why it happened (its because i installed a Stock KK rom and then an AOSP 5.1 ROM, i already faced this issue, but now i don't have a backup or a Stock 5.0.2 zip file to install and free me out of this bug). Please if there's any way to do that without a PC tell me

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