difference between Hard-SPL and SSPL?

---

Hi, i am here have some newbie questions to ask before I can flash my tilt with original Kaiser ROM.
I used Hard-spl to unlock my CID yesterday night, worked perfectly, and ready to flash kaiser HTC ROM to my tilt. However, after I read instruction from http://forum.xda-developers.com/showthread.php?t=332246 , I am confused right now.
My question is,
Do I still need to "download and install HardSPL for Kaisers" even I have already unlocked my tilt by Hard-spl? coz the link provided from " http://forum.xda-developers.com/showthread.php?t=332246 " is actually SSPL V1 showing " * THIS WILL WORK ON KAISER ONLY " .
so, do i need to use both Hard-SPL and SSPL? right now, I assume Hard-SPL is only for unlocking CID, and if I want to flash new ROM, I still need to install SSPL and follow the instruction.
Please correct me if my assumption is wrong.

If you have Hard-SPL installed just flash the new Rom.

You do not need both Hard-SPL and SSPL.

SSPL is a SoftSPL, means you need to execute into the PDA to obtain a SPL that makes the same funtcion as HardSPL. HardSPL is a permanent SPL flashed into the PDA, so every time you boot the Kaiser, the HardSPL makes the boot process.

In fact, when you flash HardSPL, the SSPL is used to make possible to flash the HardSPL onto original SPL from HTC.

So if you have flashed the HardSPL, you don't need the SSPL anymore, unless you upgrade the HardSPL to newer version in the future. But in this case, the newer HardSPL makes the work of using the SSPL for you.

Cheers.