For me it's even worse! After I successfully installed the 2.54 beta, I try now to connect to the computer which fail either with or without the SD card in my Colorado 300. When I connect via the USB interface transmits the track log (normally) and then closes Colorado by itself (fade out). The same thing happens whether I connect to the USB with the unit initially switched on or off or use the switch to turn it on after the unit shut down and virtually all other combination. Very annoying!
This means that I can not transfer or download data from the device, or even switch back to 2.51. What can I do?
Bengt
Over on the wiki forums a user has determined that the colorado unit might hang if it doesn't have a satellite lock when you connect it to a pc.
You have to wait 15 seconds after sharecroppers question "mass estorage" Yes / No.
Try my work for me.
Forgive my English