upgrading qtmoko

[Robin Paulson]

i've been using v22 (i think) of qtmoko for a while now, and would
like to upgrade to v26

i understand the only difference between debian and qtmoko is the
contents of /opt/qtmoko. is this correct?

if so, is upgrading as simple as untarring the relevant bits of the
filesystem into /opt?

or are there other changes, necessitating replacing the entire file system?

cheers