VMware has released ESXi 5.1 U2 to the general public.
The HP custom ISO for this version is available at the following URL: https://my.vmware.com/web/vmware/details?downloadGroup=HP-ESXI-5.1.0U2-GA-JAN2014&productId=285 meaning that HP now support this Update across our server line.
The updated recipe document has been published and is available on vibsdepot at http://vibsdepot.hp.com/hpq/recipes/HP-VMware-Recipe.pdf
Enjoy
