@bluescajon Its been long time and i have now fast cable modem. I just downloaded older firmware. Then i just update/downgrade succesful. I remember that was easy and 4g+ speed was again almost good...

@petrijuhani

@petrijuhani Update for successful downgrade. I make kamikaze firmaware downgrade and voila 4g+ is back. Download 1.5 and kick it in manually by usb drive.

@bluescajon I update firmware .7.0 0.9.1 v0001.0 Build 220826 Rel.58057n and speed drop a lot. No 4g+ anymore. Only 40/40 max. must change router manufactory bc no downgrade firmware. I spend hours...