Thought I'd add if anyone is apprehensive, the recovery procedure from a bad flash is easy (though I have not needed it):
The 1312/8324 can be recovered without a serial connection by holding the reset button in while booting for ~20 seconds. The light flashes red then goes solid red, you wait ~1 minute and then you can upload a working firmware as the boot loader has a build in web server. Set your PC to 192.168.1.100 and access 192.168.1.1 after waiting the required time.
This process is the same as having a serial connection and interrupting the boot, so gets you to the same boot loader based web server. I admit I have not had a bad flash to test it, but given its totally in the boot loader I cant see how a flash from the web GUI or other could interfere with it.