ok. il again rewrite how it can be done from scratch for our PRO..LOL
1. download FlashTool
2. download adb driver (u may download from xda via FlashTool page from doomlord and extract exe to install)
3. download "root/unroot sony ericsson android phone 2011 v1.5 by quangnhut123"
4. connect hp to pc, ignore pc companion, extract quangnhut123 to desktop, select root and wait until hp restart - ROOTED.
5. download "Finally CWM Recovery 5.0.2.7-nAa-r2 for Stock Xperia Neo/Neo v [With Lock Bootloader]", extract to desktop, select cwm1 for PRO, follow instruction.
6. download your preferable firmware in winrar format into the memory card, boot into cwm by pressing down volume button when SE word comes out.
7. wipe data, wipe cache, clear dalvic, install zip from sdcard. settle.
WORKS FOR LOCKED AND UNLOCKED BOOTLOADER PRO.
Sorry for the late reply.
Why don't use the LuPuS kernel only? It already included root and CWM.
Flash the kernel, boot into CWM and install UHD (of course for unlocked bootloader only).