This devices supports OpenVPN and Tor, does it update it's software easily? What is the difference between the one you mention and this: https://www.amazon.com

This devices supports OpenVPN and Tor, does it update it's software easily? What is the difference between the one you mention and this: https://www.amazon.com/GL-iNet-GL-MT300A-Pre-installed-Performance-Programmable/dp/B01DBS5Z0W/ref=pd_sim_147_5/142-7064876-8269134?_encoding=UTF8&pd_rd_i=B01DBS5Z0W&pd_rd_r=95M33K7WS6GD6Q36GGY1&pd_rd_w=3beLG&pd_rd_wg=Wq7Z6&psc=1&refRID=95M33K7WS6GD6Q36GGY1 https://www.amazon.com/GL-iNet-GL-MT300A-Pre-installed-Perfo... Can I upgrade the antennas, do you know? Edit: it looks like it can take PR-SMA female as a connector.