I have a TP LINK TL-WR840N. I need help for firmware selection for upgrade. On the router box the hardware version is mentioned 6.20 while in the router's admin page the hardware version is TL-WR840N v6 00000007, which means v6. So I want the latest firmware possible. Which hardware version is my router. If its v6 then there is no new update for it on tp link's firmware download section. But if its version 6.20 then the latest version according to the site is TL-WR840N(EU)_V6.20_201124. Also after unzipping that file the img file's name is TL-WR840Nv6_EU_0.9.1_4.17_up_boot[201124-rel64328].bin which seems like the next upgrade to my current version 0.9.1_4.16. So what do I do here ? Update to this version or not ?