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

Can anyone help with opening a permamnetly locked Nissan Micra 2003 tailgate? Tried removing the immobiliser fuse from fuse box which worked in the past but boot still shut fast. I've read some of the postings on this subject but still unclear as to how to open boot from the inside. Would anyone have an idiots guide on how to open the boot from the inside please? I would be grateful for any suggestions. Thanks in advance.