LPC2378 programming

[system]

hi,
I am trying to program a LPC2378 using Flash Magic Ver 3.61.
But I am unable to do so because it shows message "Failed to program the Flash". Although earlier, I had programmed the device using the same software version. When I read the device signature of the earlier and the later devices, I found that the earlier LPC2378 had a bootloader ver. 3.1 whereas the present device has a bootloader ver. 3.2. Can anyone help sort the problem??

[Andy Ayre]

What crystal frequency for both devices?
What baud rate for both devices?
Same hardware or different for both devices?

You can reliably read the device signature, but you cannot program the flash at all?
Does anything else fail to work that you can tell?

Andy