OpenWrt Forum Archive

Topic: TP-Link TL-MR3020 (Recovery ok + serial unable to mount)

The content of this topic has been archived on 17 Apr 2018. There are no obvious gaps in this topic, but there may still be some posts missing at the end.

For first I have read all the topics about this router.
The device it's a v1.9 that any pic of the internet shows the same microchip (ESMT).
When I bought it I upload the correct OpenWrt version, and did,t turn on.
It only shows 2 led reset and power.

I use Wireshark to show traffci and leaerned that I need to put my pc on the and a file called mr-3020_tp_recovery.bin in the home of tftp server.

When I use wireshark I see traffic in the TFTP protocol, to the Correct.
When it restart... nothing else happens...

I bougth a serial cable and boot it and shows this:

   ¶¶33X UART
[    0.480000] console [ttyATH0] enabled, bootconsole disabled
[    0.480000] console [ttyATH0] enabled, bootconsole disabled
[    0.490000] m25p80 spi0.0: unrecognized JEDEC id c84016
[    0.510000] ag71xx_mdio: probed
[    0.520000] eth0: Atheros AG71xx at 0xb9000000, irq 4
[    1.070000] ag71xx ag71xx.0: eth0: connected to PHY at ag71xx-mdio.1:04 [uid=004dd041, driver=Generic PHY]
[    1.080000] TCP cubic registered
[    1.080000] NET: Registered protocol family 17
[    1.090000] Bridge firewalling registered
[    1.090000] 8021q: 802.1Q VLAN Support v1.8
[    1.100000] VFS: Cannot open root device "(null)" or unknown-block(0,0)
[    1.100000] Please append a correct "root=" boot option; here are the available partitions:
[    1.110000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)


Anyone knows what I need to do to runs ok?

Thanks to everybody.

Do you also have the TL-MR3020(UN) model ?
I have bought 3 of this and have the same problem as you do. I "bricked" 2 of them. #upset
Where did you buy your serial cable ? any link ?
Did you follow this tutorial :
Thank you

Did you manage to do something ?

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