shahanovski wrote:I flashed 2 of my routers, TP-Link TL-WR941ND and TL-RW741ND, and both got bricked.
I chose "Preserve settings" while upgrading and I believe that might have bricked them. I'm sure I've used the correct F/W version.
Both are useless now and only Power light comes on after turning them on. No Sys light at all and no way to access via SSH

http://wiki.openwrt.org/toh/tp-link/tl-wr941nd
http://wiki.openwrt.org/toh/tp-link/tl-wr741nd
You will probably have to do Serial recovery for both routers if
all you see is the power light
If you see a power light - the router is not bricked, you just
have a bad firmware flash
If failsafe doesn't work - serial recovery will almost always work
If you cannot serial recover your router - you should not be
flashing 3rd party firmware - you always take the responsibility
that you are flashing the firmware, and if anything goes wrong,
then you have to recover the router yourself.
Read up on those 2 wiki pages for OpenWRT and how to recover
your routers via serial recovery.
Soylent Green Is People! 
2x Asus RT-N16 = Asus 3.0.0.4.374.43 Merlin
2x Buffalo WZR-HP-G300NH V1 A0D0 = Gargoyle 1.9.x / LEDE 17.01.x
2x Engenius - ESR900 Stock 1.4.0 / OpenWRT Trunk 49400