I have a question regarding the upgrading of 19.07 --> 21.02.
I had orginally gone to perform a sysupgrade, however I got the warning message:
Device linksys,mamba not supported by this image Supported devices: linksys,wrt1900ac-v1 armada-xp-linksys-mamba linksys,mamba - Image version mismatch: image 2.0, device 1.0. Please wipe config during upgrade (force required) or reinstall. Reason: Partition design has changed compared to older versions (up to 19.07) due to kernel size restrictions. Upgrade via sysupgrade mechanism is not possible, so new installation via factory style image is required. Image check failed.
The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for your platform.
So I did some investigation and it appears we need to change the partition size... ok.
My question is, what is the upgrade process here? I only ask because I have read conflicting information and I would rather not have to find out the hard way I have bricked my router.
Perform a forced sysupgrade, not keeping my config settings -- done (easy) -- will this upgrade the partition size?
Perform a forced sysupgrade of the factory image not keeping the config settings? I've read 'sysupgrade -n -F factory.img' in Upgrading Linksys WRT1900ac v1 to 21.02-rc1 and Problem with linksys wrt1900ac v1 sysugrade to 21.02 not supported? , but I also read information in the official upgrade notes that indicates if you sysupgrade with the factory image you can brick the router.
Revert the router back to the stock image and load the openwrt factory image. (hardest and most labour-intensive)
Any ideas? Can someone please point me in the correct direction?