Stuck on TF700t upgrade to TWRP v2.8.7.0

I am trying to upgrade my TF700t to run TWRP V2.8.7.0.
so that I can run omni-5.1.1
I've tried letting the TWRP app do it...no good.
Booting to restore does'nt show the TWRP-2.8.7.0
It is currently running,
4.4.2 bootloader
CyanogenMod CROMBi-kk
TWRP v2.6.3-that3
On the SD card is,
BaNkS-dynamic-gapps-5.x.x-8-10-15
omni-5.1.1-20150811-tf700t-NIGHTLY
omni-5.1.1-20150811-tf700t-NIGHTLY.zip.md5sum
twrp-2.8.7.0-tf700t
UnLock_app_V8.apk
UPDATE-SuperSU-v2.46
I am stuck on getting TWRP to
upgrade before I can go any further.
What am I doing wrong, and what steps do I need to do?