Nissan Micra 2003 (new shape model) locked boot!!?

Can anyone please help solve the problem the mysterious locking Micra boot?! I've discovered from reading forum q&a's that Micra boots automatically locking and unlocking is a common problem. (although the Nissan dealers would never tell you this!). I've read some of the solutions but unable to follow as I can't get the boot open. Would anyone have diagram(s) to open/fix boot mechanism? Thanks for reading and your help.