How to reflash my Xperia Z Ultra topic

I have very BIG problem with my Xperia Z Ultra. I use this info from MULTIROM.

"Originally Posted by wtfhax:

Assume you have lifehacker69's boot.img and running official Sony stock rom.
1. Boot into fastboot/bootloader
2. "fastboot flash boot boot.img" from lifehacker69
3. "fastboot flash FOTAKernel TWRP_multirom-togari_20150121-00.img"
4. Reboot into twrp recovery flash MultiROM-v30x-180115-UNOFFICIAL-togari.zip
5. There you will have Multirom options in twrp."



I reset ny telephone, and use this instruction but have very big problem.
1. First install after reset lp ROM BlissPop v2.0 by Team Bliss-02/22
2. fastboot flash boot boot.img" from lifehacker69 and "fastboot flash FOTAKernel TWRP_multirom-togari_20150121-00.img"
After this I reboot and now have very BIG problem. My Z ultra only restart and see only SONY logo without any result ((.
Is it possible to turn in bootloader mode or anything else?
Now only see bootlogo with purple light only for 2-3 sec.
Yes I now this is my big error -boot original patched sony kernel with TWRP after install LP ROM BlissPop.
What is possible to do now? Thanks a lot.