I've removed simlock.sin from the official decrypted package, and reused the 67 UK firmware's loader.sin
LT26i_6.0.A.3.73_Generic Lebanon (1257-8080).ftf
mediafire 3-part - thanks to keunhuvac
I'll post further details of the firmware in a bit - meanwhile I'm packing it as well as uploading it to online upload sites. I haven't found any decent ones - so I am going to use sendspace for now (really appreciate it if anyone has spare webspace or service that I can upload this to).
Firmware is tested on my Xperia S Black (HK - 1257-0869)
I will also post a prerooted system.img for this firmware later today (Thanks to my 4G connection in HK, it's so slow )
p.s. mistakenly reported this as SG firmware, it's in fact Lebanon Generic. Please accept my apology.