I'll be able to test stuff in an hour when I'll get back home.
I can test all locales if need be.
ixtab,
Do you think I'd better reproduce the "white home page" error with old bundle first or go test new bundle straight away?
The error I had was on Kindle 5.0.0 (more details via PM if needed).
eureka,
No problem, man, just let me know if you need some tech help

BTW, when we discovered that Kindle tool cannot extract homebrew updates (I think this might be related to certificate or whatever... didn't investigate, though), would you mind sharing kbd sources so kbd can be tweaked?