Jast made a brick with a Cristal xbox 1.6 and a x-changer v2.5 modchip flashing wrong update.bin OS :-(
Documentatios say that whould be a EMS (emergency recovery system) but I'm not sure how to enable and if it really exists. Found some info about SmartXX board (even a videoclip with ems tested) but nothing about X-Changer v2.5. Any hint (apart removing modchip and changing with a brand new)?

Thanks in advance.

ahhhh... good ole x-changer 2.5. I remember doing exactly what you need to do in 2007. I reflashed it using the built in emergency repair system. I then connected it
(xbox) to my computer and flashed a new bios over the network. You need the emergy repair disc however. Don't know if you have that or where to get it....but the torrent sites would be my best guess. I doubt the website is still around.