This version 3.5.1.1798 in the refurbished remarkable 2 has kept problem updating, it says "error checking for update" the whole time, and when it's connected to the laptop, the root password was "denied", making it hard to fix with its internal clock problem, pretty bad, the seller should know that it doesn't work properly! If the internal clock can't be fixed, the newest version can't be updated, and this device can't be paired up at all! Pretty disappointed with it!