[camccardell]

Is there a way to revert back to Linksys firmware on the 3200acm?

It says its flashing, but will always reboots back to dd-wrt

[Malachi]

[camccardell]

I am on the latest version as of today.
v3.0-r36104

[spuriousoffspring]

As long as you are sure you have the correct firmware for your router and hardware version - it should work.
However, it seems that every now and then certain builds don't work. You may want to try first flashing to an earlier build and then try the stock firmware again.

Hope this helps and good luck!

[camccardell]

still trying and no luck.

Any other ideas?

[spuriousoffspring]

It could be that the Linksys Firmware is successfully flashed onto one partition, but the router boots into the DD-WRT partition afterwards.
You can easily check with
ubootenv get boot_part
Will produce three lines of text with the third being a number 1 or 2. That number is current partition.

ubootenv set boot_part opposite number from above
For example:
If current partition is 1, use following command:
ubootenv set boot_part 2

Then enter:
reboot
Router will boot into alternate partition which (hopefully) has Linksys firmware. If not, make a note of DD-WRT version number.

If both partitions have DD-WRT and other versions of DD-WRT have failed then the only other way to flash Linksys firmware is by accessing the serial port inside the router and using a USB-TTL cable.

One of the more popular USB-TTL cables used:
https://www.adafruit.com/product/954

YouTube video tutorial:
https://m.youtube.com/watch?v=mN7u79EupGQ&t=5s

[AKozlovskiy]

I can not understand what I'm doing wrong.

Firmware take here:
https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2018/06-29-2018-r36247/linksys-wrt1200acv2/

I'm using the file:
https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2018/06-29-2018-r36247/linksys-wrt1200acv2/factory-to-ddwrt.bin

Connected to the router by cable. The device is configured, working, the Internet is.

I run the flashing, the router is rebooted and returns to its native firmware #2.0.5.187766.

[spuriousoffspring]

It's possible the DD-WRT firmware was flashed successfully, but the router booted back to the former partition.
You can try manually switching to alternate partition with either of the two methods described in the Tutorial or flash the factory-to-ddwrt.bin again.

* This happens sometime. Nothing you did incorrectly!

[AKozlovskiy]

[spuriousoffspring]

Try a different build.

FYI: SSH is not enabled by default - only Telnet (port 23). Also, the default IP is 192.168.1.1

[AKozlovskiy]

[Malachi]

You have to enable it. On one of the latest builds, I noticed it was disabled in administration.

[Brian4574]

I am having the same problem. I attempted to boot to another partition using the "on-off" method. Both times I tried it rebooted to the OEM firmware.

[tiborp]

Latest builds (36410) for Linksys WRT1900 ACS and AC V2 (FCCID:Q87-WRT1900ACV2) fail to properly boot on initial wrt install (factory-to-ddwrt.bin). The router attempts to startup/boot, fails 3(?) times and then switches automatically back to OEM firmware. I didn't try prior builds as builds as far back I can see (36427, 36330) all have booting issues.

I, of course, tried to force partition switch which confirmed that router is trying but failing, then thankfully fail-safes back to OEM vs. bricking.

[spuriousoffspring]

Try upgrading to DD-WRT from an older version of stock Linksys firmware. If you don't have an older version saved, you can ask the Forum or get one here:
https://wiki.openwrt.org/toh/linksys/wrt_ac_series
Firmware Images - Linksys OEM Builds

It goes without saying, but be sure to download the correct OEM build for your router and hardware version.