Hy!
I am using TP-Link tl-wn722n (v1) until now.
I made a simple update, then my dongle gone. (cant dist-upgrade, because it is kill the pi)
lol, the firmware-atheros gone from the pi…
Yesterday i used it, i dont remember that i remove it (and why i want to remove it? 
)
What version of Parrot are you running? latest parrot for pi.
What method did you use to install Parrot? dd to sd card
Configured to multiboot with other systems? no
If there are any similar issues or solutions, link to them below:
If there are any error messages or relevant logs, post them below:
dmesg | tail said:
[ 86.689565] usb 1-1.3: Product: USB2.0 WLAN
[ 86.689577] usb 1-1.3: Manufacturer: ATHEROS
[ 86.689590] usb 1-1.3: SerialNumber: 12345
[ 86.690583] usb 1-1.3: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
[ 86.691486] usb 1-1.3: Direct firmware load for ath9k_htc/htc_9271-1.4.0.fw failed with error -2
[ 86.691512] usb 1-1.3: ath9k_htc: Firmware htc_9271.fw requested
[ 86.691558] usb 1-1.3: Direct firmware load for htc_9271.fw failed with error -2
[ 86.691574] usb 1-1.3: no suitable firmware found!
[ 86.691586] usb 1-1.3: ath9k_htc: Failed to get firmware htc_9271.fw
[ 86.692270] usb 1-1.3: ath9k_htc: USB layer deinitialized