[HELP] Hboot update

Please help me to update the HBOOT on my DESIRE 601. I dont know how to update to 2.22.0000. I've changed the cid(was vodap021), the phone is s-off. Thankx.

zara_ul pvt ship s-off rl
cid-11111111
hboot-2.20.0000
radio-1.21.40e.00.27