http://pip.cat/khd/ is not working now for me:
Fatal error: Call to undefined function mysqli_connect() in /home/xinpip/public_html/khd/config.php on line 3
(just when I wanted to use to import my patches to the newest firmware, because after some crash I rebooted the Kobo, I had to choose the language again but apparently my library and database was ok, so I left it for the night... next day the device had connected to the wifi and sync'd on its own)
EDIT: Fixed now, thanks pipcat. Well, it seems it won't help me much anyway, the highest available version is 3.19.5761, and I have 4.3.8945.