21 Sep
2015
21 Sep
'15
6:42 a.m.
I have a Linksys WRT1900AC router (the version 1 hardware), currently running
OpenWRT 15.05-rc3. Now that the final release has been made, I'm contemplating
an upgrade.
According to the OpenWRT wiki, I'm supposed to download an image with a file
name ending in "sysupgrade.img" rather than "factory.img". However, I
can't
find such a file on their download site.
The best I can find (again via the wiki) is
https://downloads.openwrt.org/chaos_calmer/15.05/mvebu/generic/openwrt-15.0…
Suggestions on how to perform a safe upgrade would be welcome. As with any
piece of networking hardware, the desire is to minimize risk.
22 Sep
22 Sep
12:10 p.m.
Jason White <jason(a)jasonjgw.net> writes:
I have a Linksys WRT1900AC router (the version 1
hardware), currently running
OpenWRT 15.05-rc3. Now that the final release has been made, I'm contemplating
an upgrade.
According to the OpenWRT wiki, I'm supposed to download an image with a file
name ending in "sysupgrade.img" rather than "factory.img". However, I
can't
find such a file on their download site.
If your post-install configuration is minimal,
I recommend you skip sysupgrade.
Instead just reflash it cleanly (factory.img),
then re-apply your customization.
I usually make a cpio backup of the whole filesystem first.
That -- combined with the separate /rom and /cow --- make it easy to see
what needs to be re-applied.
24 Sep
24 Sep
9:29 a.m.
Trent W. Buck <trentbuck(a)gmail.com> wrote:
If your post-install configuration is minimal,
I recommend you skip sysupgrade.
Instead just reflash it cleanly (factory.img),
then re-apply your customization.
This option could work, since the customizations are mostly confined to the
/etc/config directory at this point.
I'll look around for the reflashing instructions.
10:59 a.m.
Jason White <jason(a)jasonjgw.net> writes:
Trent W. Buck <trentbuck(a)gmail.com> wrote:
They're under
http://wiki.openwrt.org/doc/howto
especially
http://wiki.openwrt.org/doc/howto/generic.sysupgrade#mtd
I usually recommend doing the first install with TFTP,
then subsequent reinstalls with mtd.
The reason for the initial TFTP to be sure you can un-brick it.
(This is mostly for those building custom OpenWRT images.)
I usually do this (from memory, untested):
ip address add 192.168.0.2 peer 192.168.0.1 dev eth0
while ! curl --upload-file foo.img tftp://192.168.0.1/
do sleep 1
done
...and then reboot the router while cabled directly to your laptop,
plus any other steps to put it into TFTP mode.
PS: you can also reflash from LuCI, the web UI.
LuCI is installed by default on stable images.
LuCI can be installed via opkg on other images.
If your post-install configuration is minimal,
I recommend you skip sysupgrade.
Instead just reflash it cleanly (factory.img),
then re-apply your customization.
This option could work, since the customizations are mostly confined to the
/etc/config directory at this point.
I'll look around for the reflashing instructions.
27 Sep
27 Sep
2:28 a.m.
Trent W. Buck <trentbuck(a)gmail.com> wrote:
They're under
http://wiki.openwrt.org/doc/howto
especially
http://wiki.openwrt.org/doc/howto/generic.sysupgrade#mtd
Thanks for the reference and for the detailed advice (not quoted for brevity
in this reply).
It will be at least a week before I'll have time to work on it, due to travel
and work-related commitments.
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