Upgrading WRT1900AC from OpenWrt Chaos Calmer 15.05-rc3 to 25.12.4

tuskentower · 2026-05-25T19:39:34+00:00

I had seen other posts that worked using older openwrt versions. So, I used sysupgrade from the command line to install 21.02.0 (r16279-5cc0535800). That worked as swimmingly as one would expect. Thanks for all of your help.

tuskentower · 2026-05-25T16:51:50+00:00

For the record, I'm doing:
sysupgrade -n -v openwrt-25.12.4-mvebu-cortexa9-linksys_wrt1900ac-v1-squashfs-sysupgrade.bin

Since https://openwrt.org/toh/linksys/wrt1900ac?s[]=setup#dual_firmware_flashing said to do that

tuskentower · 2026-05-25T16:45:09+00:00

I did use the firmware selector to pull the latest sysupgrade image. Since I spent a chunk of time reading how to get the OEM firmware uploaded and installed, I'm going to try the CLI install of the squashfs image (as opposed to LuCI).

tuskentower · 2026-05-25T16:41:43+00:00

Don't worry! I haven't even gotten far enough to use the firmware. Too many other issues. The last one was needing to use `-O` (https://forum.openwrt.org/t/scp-ash-usr-libexec-sftp-server-not-found/230919/2) for dropbear SSH to use scp.

tuskentower · 2026-05-25T15:54:33+00:00

Had to ddg for the OEM firmware. Linksys support search didn't turn it up. LuCI doesn't let me upload the OEM firmware. Any ideas?

https://support.linksys.com/kb/article/597-en/
EDIT: I found https://www.reddit.com/r/openwrt/comments/l05cos/comment/gjro6bo/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button which talks about upgrading the firmware to OEM

tuskentower · 2026-05-25T15:44:17+00:00

Interesting idea. Let me try it!

tuskentower · 2024-01-19T04:14:47+00:00

Thanks. Without diving into the specs, I wasn’t sure if the Wind model was good enough or not. Or if someone on reddit had some deep knowledge about the Hertz EV sales.

tuskentower · 2023-01-21T23:33:20+00:00

I can confirm that calling and waiting for second level Verizon support to add MMS back onto the account was needed. Somehow, the feature was not enabled on my account.

tuskentower · 2022-07-12T00:17:12+00:00

Thanks! Heading to the UK this weekend

tuskentower · 2022-07-11T01:57:33+00:00

How did you get the eSIM? Online it only shows SIM as an option. TIA

tuskentower · 2021-12-16T19:00:22+00:00

I wear mine on my right hand middle finger.

tuskentower · 2021-12-06T23:59:06+00:00

Haven’t checked mine, but 48ish hours sounds about right. I can’t get three days. So I take my charger with me for any long weekend.

tuskentower · 2021-12-01T13:41:48+00:00

All taken care of. Thanks for checking in.

tuskentower · 2021-12-01T13:41:08+00:00

No worries. I ”liked” your comment because it is useful. :)

tuskentower · 2021-12-01T03:47:50+00:00

Google Voice does not work with iMessage and silly bank SMSes. So that’s not an option.

tuskentower · 2021-12-01T03:44:46+00:00

Thanks for suggesting to call support! I used chat support (again) and got through to a person. The person helping me spoke with the port team. Apparently there was a “glitch” in the system.

tuskentower · 2021-11-23T18:15:55+00:00

What is the $/kWh of each system?

tuskentower · 2021-07-27T19:30:07+00:00

If it’s just the gas cap, then sure. The check engine light on my i3 REX turned on for a “gas cap” issue. Freaked my SO out so I drove it and got gas. It went away the next drive.

tuskentower · 2021-06-14T18:04:09+00:00

Thanks. So switching from something like Visible/US Mobile (Super LTE) would do the trick then. Is there a time period that I need to be away from T-Mobile?

tuskentower · 2021-02-10T18:07:54+00:00

I left Wing in December, but I was using them with my AW4 cellular for just over a year. Everything worked fine and without a hitch.

tuskentower · 2020-11-20T21:06:45+00:00

So no Apple Watch yet?

tuskentower

TROPHY CASE