Not 'brief' and not easy. I did this once when I replaced my unit.
You will need a magnetic Philips (star) screw driver & Butter knives.
BE GENTLE MOST OF THE PLASTIC HAS LITTLE TABS THAT CAN BREAK. iF IT WON'T COME OUT, USE THYE BUTTER KNIFE TO RELEASE IT. BREAK THEM AND REGRET IT ALL THE WAY TO THE WRECKING YARD.
Remove lower console cover(around shifter, shifter knob comes off). Disconnect the lighter.
Remove the bordering cover from the storage bin to the vents and don't break any tabs!
Remove the entire console-climate and radio- 6- 8 screws.
Then, out of the car, remove the radio from the frame.
Re-assemble for your days(21) without radio.
Then do it again to put it back in.
OR
Option 1 - have a tested replacement unit ready to go right back - this is my favourite option because it was cheap and looks good...The yards will ask for big bucks but electronics are very negotiable - I paid $100 CDN.
Option 2 - go after-market - and let the installer worry about it and receive a warranty.