Hi everyone,
Pleased to enter your forum.
I followed the radeonorama's procedure (post #1) with the VERINFO.DAT from pionara (post #2). This CNSD-310FM EU 2012 upgrade works well on a F9310BT (september 2011 release). Thanks to you radeonorama and to you pionara 
For information the versions below are retrieved booting with pionara's "supertestmode" testmode.key copied on a microSD (note: copy/paste functions enabled).
AVIC F9310BT initial versions:
PRODUCT NUMBER= AVIC-F930BT / XNEU5
NAVI INFORMATION= NX072/EU5
REGION CODE= 2
APL PROGRAM= 3.001
VOLUME INFORMATION= 3
BLUETOOTH FIRMWARE= 3.22
Versions upgraded:
APL PROGRAM= 4.01
VOLUME INFORMATION= 4
BLUETOOTH FIRMWARE= 3.24
Note:
-First boot after upgrade i set the french language but the next boot the system was in a kind of norvegian language. Looking in the regional settings the french softkey is selected. Switched to english (reboot), came back to the regional settings, and reselected french to recover my language, and a normal heart rhythm..!
That's all for this thread.
I'm now on the quest of the softmod to neutralize the caution screen for the video while driving.
@pionara: you let understand that there is a solution, in the post #2 of this thread:
http://avic411.com/index.php?/topic/35540-new-firmware-pioneer-401-and-bypass/page__hl__f940bt&do=findComment&comment=258314
But I have some difficulties to find the method. Is it because there is no softmod for this feature but only hardmod (around Velocity Speed Sensor signal) ?
@radeonorama: sorry I cannot help you for your cable.
Thanks to everyone helping, if I can, just ask.