Amazon has just started a new promotion that allows select customers to buy the Fire TV Stick 4K for $29.99 when you enter promo code 4K21FTV during checkout. At $20 off of the regular price of $49.99, that matches this year’s Prime Day and Black Friday prices. This appears to be a targeted promotion that does not work for all Amazon accounts. For those of you keeping track, this seems to be the new upgrade promotion that replaces the old “4KFIRETV” promo code that, likely by mistake, allowed people to buy the Fire TV Stick 4K for just $4.99 for a few hours in October.