Thanks for an explanation, but if possible i have some questions for you:
I have long standing problem and seems to similar of your problem, but i need to know. If possible please write me the port speed i think you connect with 1Gbit to internet and 100mbit with 450g.
Also please give advice to users, how to downgrade the board firmware.
I use ether1 (WAN1) and ether 2 (WAN2) with 100Mb for internet and ether5 with 1Gb both with auto-negotiation. (I have two ISPs). Of course wih load-balancing and failover routines.
Downgrade procedure is quite simple:
1. Download the .fwf firmware file for corresponding product firmware from http://routerboard.com/index.php?showProduct=52
Drag&drop this file into File Window from Winbox.
3. Last operations:
from terminal window:
/system routerboard print
and check the "update-firmware" to see if the downgrade version was "seen". If it is then you will put:
/system routerboard upgrade
which, in this case will do a "downgrade" firmware.
These are the steps I followed to downgrade the firmware to "original".
I hope you will be satisfied with the answers.
If you need more help don't hesitate