Currently if the iPhone has ios 11.2 installed, it cannot print or update firmware as there seems to be a software bug disallowing the communication between both iPhone using ios 11.2 and current sprocket print app.
This makes updating firmware and print syncing unusable on ios 11.2.
The only thing the iPhone with ios 11.2 can do is pair under Bluetooth settings.
I have followed all trouble shooting tips for this device, so Devs posting those instructions is beyond useless.
I have rolled back my iPhone software to ios 11.1 and the HP Sprocket works as intended.
Notwithstanding the above, the HP Sprocket app desperately requires an update for use with ios 11.2.