Upgrading WRT1900ACS-v2 to 21.02

[reknuB]

Ok.. heres the go... Wanting to upgrade

Linksys WRT1900ACS-v2 (shelby v2 - according to label on bottem of router)

Currently running

Model	Linksys WRT1900ACS
Architecture	ARMv7 Processor rev 1 (v7l)
Firmware Version	OpenWrt 18.06.2 r7676-cddd7b4c77 / LuCI openwrt-18.06 branch (git-19.020.41695-6f6641d)
Kernel Version	4.14.95

Question is - Can i grab

https://downloads.openwrt.org/releases/21.02.1/targets/mvebu/cortexa9/openwrt-21.02.1-mvebu-cortexa9-linksys_wrt1900acs-squashfs-sysupgrade.bin

And just upgrade - with zero issues - or is that release im currently running too old for the upgrade to just work.?

Not entirely keen on trying to re-setup everything as last time was a huge hassle and frankly, scary.. dont want to brick the router..

Trying to keep it all simple so my brain doesn't explode....

[anon89577378]

Due to the changes from swconfig to DSA, you won't be able to upgrade your configs.

You'll need to re-configure from scratch.

Save your current configs and use them as a guide.

You'll also need to use the factory image...using the sysupgrade image for 21.02.1 can brick a Linksys device.

[tmomas]

See also the various topics regarding WRT1900 /WRT3200 and 21.02.

[enzobusca]

How much free space was left after installation?
Thank you so much.

[reknuB]

Updated to the latest... have a older openwrt on second partition as a backup..

Have installed ad-block, advanced reboot and banip packages aswell... everything else basically default...