accessing upython shell via terminal not working

[yoLo_]

So, everything has been going very until I have decided to
flash the latest standard new firmware to my pyboard v1.0
I used the pydfu.py script
I don't know what has gone wrong but if this is some sort of a coincidence
after i have performed the flash, the pyboard seems to be running fine but i can no longer go into shell, using picocom
this is what i get:
roidx86@roidx86:~$ sudo picocom /dev/ttyACMO
[sudo] password for roidx86:
picocom v1.7
port is : /dev/ttyACMO
flowcontrol : none
baudrate is : 9600
parity is : none
databits are : 8
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv
imap is :
omap is :
emap is : crcrlf,delbs,
FATAL: cannot open /dev/ttyACMO: No such file or directory

I have both pyboard 1.0 and 1.1. I have only flashed the v1.0
before flashing the board, i was using the upython shell without any issues
I have both pyboard 1.0 and 1.1. I have only flashed the v1.0
but i can no longer get into upython shell on both.
has this to do with the fact that i have pip installed USB ? which is a dependency for pydfu.py ??

[dhylands]

It looks like you're using /dev/ttyAMAO rather than /dev/ttyAMA0 (i.e. using a capital Oh rather than a zero)