which form to fill for HSMP+ Tier1 visa holder for extension

[HSMP(Tier1)]

Dear Friends,

Please guide that for my visa extension which form I have to fill?

my visa is Aug 2006 to Aug 2008 HSMP (enter UK before 7 Nov.2006 and left uk in 2007)

got 4 years Tier 1 on HSMP JR (from Feb 2009 to Feb 2013)

now for extension which form is to fill up

1) tier 1 general extesnion which need searning points
or
2) FLR Tier 1 (HSMP) of 6 april,2012

please guide

thanks

[geriatrix]

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