Upgrade Mikrotik RB2011-UiAS

I have a Mikrotik RB2011-UiAS here. At the time I bought it, I had trouble installing OpenWRT on it because of the bug on the 5 gigabit ethernet ports. I've compiled the source with the patches by hand at home, and have managed to have OpenWRT Breaking Barrier 14.07 running on it.
Now I'm trying to upgrade it, and after following the steps on the OpenWRT website I'm getting an error.

root@gw01:~# sysupgrade -v /tmp/openwrt-18.06.4-ar71xx-mikrotik-nand-large-squashfs-sysupgrade.bin
Sysupgrade is not yet supported on rb-2011uias.
Image check 'platform_check_image' failed.
root@gw01:~#
root@gw01:~# sysupgrade -v /tmp/lede-17.01.0-r3205-59508e3-ar71xx-mikrotik-nand-large-squashfs-sysupgrade.bin
Sysupgrade is not yet supported on rb-2011uias.
Image check 'platform_check_image' failed.
root@gw01:~#

Any thoughts or guidance?
Thanks!

Perhaps you could/should install from tftp boot procedure as Sysupgrade is not yet supported on rb-2011uias ?

https://openwrt.org/toh/mikrotik/rb2011

https://openwrt.org/toh/mikrotik/common

https://openwrt.org/toh/mikrotik/rb2011uias

backup and your configuration if you have customized from luci

I've done as suggested, and now my device won't boot:


[    3.185127] UBI: auto-attach mtd6
[    3.188583] ubi0: attaching mtd6
[    3.613904] __nand_correct_data: uncorrectable ECC error
[    3.619442] ubi0 warning: 0x802a3910: error -77 (ECC error) while reading 64 bytes from PEB 265:0, read only 64 bytes, retry
[    3.631687] __nand_correct_data: uncorrectable ECC error
[    3.637182] ubi0 warning: 0x802a3910: error -77 (ECC error) while reading 64 bytes from PEB 265:0, read only 64 bytes, retry
[    3.649431] __nand_correct_data: uncorrectable ECC error
[    3.654933] ubi0 warning: 0x802a3910: error -77 (ECC error) while reading 64 bytes from PEB 265:0, read only 64 bytes, retry
[    3.667179] __nand_correct_data: uncorrectable ECC error
[    3.672699] ubi0 error: 0x802a3930: error -77 (ECC error) while reading 64 bytes from PEB 265:0, read 64 bytes
[    3.683048] CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.184 #0
[    3.689078] Stack : 804c76a2 00000032 00000000 00000001 00000000 00000000 00000000 00000000
[    3.697771]         00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    3.706471]         00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    3.715172]         00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    3.723871]         00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    3.732572]         …
[    3.735108] Call Trace:[    3.737460] [<8006b0cc>] 0x8006b0cc
[    3.741076] [<8006b0cc>] 0x8006b0cc
[    3.744680] [<802a3938>] 0x802a3938
[    3.748287] [<802a3c9c>] 0x802a3c9c
[    3.751899] [<802a361c>] 0x802a361c
[    3.755506] [<802a8ba8>] 0x802a8ba8
[    3.759123] [<8029e00c>] 0x8029e00c
[    3.762726] [<802a9dcc>] 0x802a9dcc
[    3.766330] [<8029e020>] 0x8029e020
[    3.769946] [<800a978c>] 0x800a978c
[    3.773553] [<8049c428>] 0x8049c428
[    3.777153] [<8049c0a4>] 0x8049c0a4
[    3.780768] [<80483230>] 0x80483230
[    3.784374] [<800609f4>] 0x800609f4
[    3.787976] [<80270008>] 0x80270008
[    3.791593] [<80097e6c>] 0x80097e6c
[    3.795198] [<800a3b18>] 0x800a3b18
[    3.798802] [<80483d10>] 0x80483d10
[    3.802416] [<80483230>] 0x80483230
[    3.806020] [<803e0b18>] 0x803e0b18
[    3.809638] [<803e0b28>] 0x803e0b28
[    3.813243] [<803e0b18>] 0x803e0b18
[    3.816844] [<80066278>] 0x80066278
[    3.820465] 
[    3.822954] __nand_correct_data: uncorrectable ECC error
[    3.828451] ubi0 warning: 0x802a3910: error -77 (ECC error) while reading 64 bytes from PEB 265:512, read only 64 bytes, retry
[    3.841183] __nand_correct_data: uncorrectable ECC error
[    3.846684] ubi0 warning: 0x802a3910: error -77 (ECC error) while reading 64 bytes from PEB 265:512, read only 64 bytes, retry
[    3.870261] __nand_correct_data: uncorrectable ECC error
[    3.875762] ubi0 warning: 0x802a3910: error -77 (ECC error) while reading 64 bytes from PEB 265:512, read only 64 bytes, retry
[    3.900409] __nand_correct_data: uncorrectable ECC error
[    3.905911] ubi0 error: 0x802a3930: error -77 (ECC error) while reading 64 bytes from PEB 265:512, read 64 bytes
[    3.916444] CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.184 #0

Any suggestions?