root access - Stuck in boot after changing dpi - Lenovo a7000

I used Texdroider DPI to change the dpi from 320 to 300 and after the reboot it gets stuck at the lenovo logo. I could just flash it again but i don't have the rom on this pc, and it will take 10h to download it.

Is there any faster way to reset the dpi? I have TWRP installed. With android 5.0.1.

Edit: Output of cat /system/build.prop | grep density is ro.sf.lcd_density=300 Tried editing build.prop back to 320 with Sublime Text. Now the command returns ro.sf.lcd_density=320 but it still gets stuck.