Not able to register Sip 7821 phones on CME version 10.5

[Maxim5835]

I have 7821 sip phones and i m trying to register them on the cme 10.5.

I have uploaded the load to flash1: cause that was the only one it would agree to, however on the register global config the tftp-path flash: command is only accepting flash: 

(config-register-global)#tftp-path flash1:
Aborted: invalid tftp path

when I run the flash command this is what im getting 

#sh flash:
%Error show flash0: (No such device)

How do I resolve this to allow me register the SIP phones.

[Maxim5835 · Accepted solution]

Managed to get a solution for this.

I moved the flash memory from slot cf1 to cf0 on the router. allowing me to invoke the flash0/flash: where the tftp files were located.

I have attached the before and after screenshots after I switched the flash location.