[Sorry if this question has been asked a bunch of times, but I did look around before posting.]
Hi,
I am running OpenWrt 18.06.4 on a Linksys EA8500. I would like to upgrade it to the latest stable build, so I went to the Table of Hardware, picked my device, clicked the “Firmware OpenWrt Upgrade URL” and downloaded the .bin file.
Then I went to the LUCI interface and chose “Backup/Flash Firmware” I selected the file I downloaded and clicked Flash Image, but got this response:
“The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for your platform.”
Which I promptly put into google, and found this page:
https://openwrt.org/docs/techref/hardware/soc/soc.broadcom.bcm47xx/image.conversion
which suggested I convert the .bin file to a .trx file by stripping off the 32 byte header. I did that, and confirmed the .trx file is, in fact, 32 bytes smaller.
However, when I tried the .trx file, I still got no love, instead the same error.
What to try next? Is it better (safer) to upgrade using a shell? If so, how do I do that, or should I be doing something completely different?
Thanks very much,
-Bob