[Q] S-off hboot 1.56 confusion topic

I am currently using ViperRom 7.02 with ElementalX kernel.
I am S-on. hboot 1.56
Currently i was trying to S-off with this combination using rumrunner method , but it goes to pouring 8 times and in the end it tells me to wait 30 seconds before turning the device back on (even though it never shuts down) and running rumrunner again. I have done this several times to no avail.
I tried firewater method too but it didn't work.
I followed these commands -
adb reboot
adb wait-for-device push firewater /data/local/tmp
adb shell
su
chmod 755 /data/local/tmp/firewater
/data/local/tmp/firewater

Nothing happens after last step.

1 .So the question is do i need to go back to nearly stock Rom like ARHD to even try this S-off method. I see v84 of the Rom which is 4.4.3 sense with Sense 6 or do i need to go to older Rom?

2 . Or can S-off method can work after flashing CM or it is necessary to flash Sense ROM only?

3. I was very much interested in running Sense 6 on top of lollipop but read Lollipop not booting because we need to update firmware to latest to run it otherwise it won't boot. Can anyone confirm this ?