[WP] Upgradeto 4.5 stuck on "Executed: Upgrade DB to 4.4.7"

[SemperFi]

FYI / First attempt to upgrade a WP 9.3.2 site from 4.4.6 to recently released 4.5 stable version.
I got stuck on "Executed: Upgrade DB to 4.4.7" message under progression bar.
Try to relaunch DB : sorry unable to provide this at the moment, DB seems to have been partially updated, restore backup and run again...

[SemperFi]

Second attempt after restoring the backup -> stuck again on [Executed: Upgrade DB to 4.4.7]
Nothing moves forward, despite following all steps described here http://wiki.civicrm.org/confluence/display/CRMDOC/Upgrade+WordPress+Sites+to+4.5 (clearing cache and template_c...)

Will try restoring old civi 4.4.6 files, update with security release to 4.4.7 and retry upgrade to 4.5 to skip this 4.4.7 DB upgrade task.

[SemperFi]

Third attempt :
- 1 : restore initial nackup 4.4.6 version
- 2 : upgrade to 4.4.7 version => did not reach the end of the upgrade : stuck at "[Executed: Upgrade DB to 4.4.7]" step like when trying to upgrade with 4.5 package
- 3 : tried to upgrade to 4.5  => "Sorry unable to provide this at the moment, DB seems to have been partially updated, restore backup and run again..."

So far I'm stucked, seems there is an issue with SQL upgrade to 4.4.7 stopping after [Executed: Upgrade DB to 4.4.7]" step.

Can anyone provide some help ?
Thanks

[SemperFi]

I activated "Debugging" and the process was stuck on "Upgrading image urls" due to maximum execution time 60 sec reached.
I changed it to 120 sec in php.ini, re-run the script and it went to the end of the upgrade.
I'm on 4.5 now.