Did you have some screen shots for the error? We did meet some issue on some old ROM versions, but we can't figure out how to fix it...Hello,
This is exactly what I did step by step.
You shouldn't rather go through the recovery and do a cache and data wipe then without leaving the recovery install the VIVID ROM?
Is the French language included in the ROM ?
cordially
Christophe
Anyway, it can support French.