Since you have bootloader unlocked, I recommend that you repair your phone using flashtool, since it's a hassle to relock bootloader to use Sony Update Service. After restoring your phone, flash a stock kernel with CWM on it so you can still use CWM after changing ROM. If you want to go back to UHD, Jader recommends LuPuS kernel to use with his ROM.
Microsoft Certified Professional
Sony Ericsson Xperia Arc S(LT18i) - Unlocked BL(CM11) -> INO 2(4.2.2)
Sony PS VITA PCHJ10001(初音ミク Project Diva F Limited Edition)
1.69 - > 1.80 - > 1.81 - > 2.00 - > 2.02 - > 2.11 - > 2.12 -> 2.61 -> 3.00 -> 3.01
Sony PSP - 2006(Original replaced with 2001 MOBO)
3.60 OFW - > 5.00 M33 -> 5.50 Gen D3 -> 6.60 PRO C