Prompt LG G2 TWRP Black Screen

Hi all,,,
I installed LG G2 kitkat 4.4.2 unofficial , with TWRP,,
now after the new software the TWRP is not working ,
for example when open it then click REBOOT ,,, then Recovery
the device restart the stay in black screen for long time with no response ,,,
to restart it again i just push the power button until it run again,
how can i fix this problem to make a restore for my device to JellyBean.
my model : LG-D802