@Kevin_Z the issue occurs only in wireless...sometime the wireless become unstable....but the wired is much stable and performes well...there is no issue in wired connection.....i have about 4 to 5...

@Kevin_Z yes...i have tried all the basic settings but nothing works...what can i do😞?

Can i install tl wr841n v14 router's firmware in tl wr845n v4 router?..(.both the router have same configuration such as both have mt7628n processor...4mb rom....32mb ram...)....i want to do that...