Hello All,

I just discovered that switching from OpenWRT to dd-wrt is harder than I thought. Well, I found a couple of tutorials but my system (Linksys WRT1900ACS) does not have neither "linux" nor "firmware" MTDs. Only:

dev:    size   erasesize  name
mtd0: 00200000 00020000 "u-boot"
mtd1: 00040000 00020000 "u_env"
mtd2: 00040000 00020000 "s_env"
mtd3: 00100000 00020000 "devinfo"
mtd4: 02800000 00020000 "kernel1"
mtd5: 02200000 00020000 "rootfs1"
mtd6: 02800000 00020000 "kernel2"
mtd7: 02200000 00020000 "ubi"
mtd8: 02600000 00020000 "syscfg"
mtd9: 00680000 00020000 "unused_area"

Which one should I flash with "mtd -r write <...>"

If you have Luci installed you can just download the stock firmware from Linksys and then in Luci go to System > Backup/flash firmware and flash the stock firmware, then install whatever you want to from the stock firmware. If no Luci, just copy it to /tmp and then run sysupgrade from terminal

sysupgrade -n /tmp/linksys.stock.firmware.whatever

in LUCI I get the error "The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for your platform" when I try to flash with FW_WRT1900ACSV2_2.0.1.177097_prod.img

Edit - Before you try this, make sure you have the right firmware, in your original comment you say you have a WRT1900ACS, but the firmware you list in your second comment is for WRT1900ACS V2 (FW_WRT1900ACSV2_2.0.1.177097_prod.img)

Hmm, that sounds like the issue LEDE currently has, try running sysupgrade with the -F option to force it -

sysupgrade -n -F /tmp/linksys.stock.firmware.whatever

(Last edited by mikemccartney on 20 Dec 2016, 04:30)

Switching from openwrt to dd-wrt is pretty simple.

Don't use mtd but sysupgarde like @4mikemccartney2016 suggested.

1.) download the latest version of  dd-wrt for your WRT1900ACSv2 here: htttp://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2016/

Note: The link might be different, please check!
          An extra t has been added to the above link because linking is not allowed here. Just remove that extra t in htttp to get the correct link.

2.) use winscp to copy the file to /tmp
3.) you need to rename the file to change the file extension

mv /tmp/factory-to-ddwrt.bin /tmp/factory-to-ddwrt.trx

Note: It is important to download and use factory-to-ddwrt.bin and not ddwrt-linksys-wrt1900acsv2-webflash.bin

          ddwrt-linksys-wrt1900acsv2-webflash.bin should ONLY be flashed from GUI (Luci) interface

4.) run sysupgrade with -F option to force the upgrade process

sysupgarde -n -F -v /tmp/ddwrt-linksys-wrt1900acsv2-webflash.trx

Note: The options means:
         
           -n  ==> don't keep settings
           -v  ==> more verbose
           -F  ==> Force

5.) Reboot the router if not done automatically after the upgrade process has finished.

For future use, you can switch the firmware to which ever you want.
         
         Switch dd-wrt to openwrt
         --------------------------------
         First check which partition is booted with is command:
          ubootenv get boot_part

          If the result is part 1, change the partition with:
          ubootenv set boot_part 2 && reboot

          But if the part is 2, change the partition with
          ubootenv set boot_part 1 && reboot

         Switch openwrt to dd-wrt
         --------------------------------
         First check which partition is booted with is command:
          fw_printenv boot_part

          If the result is part 1, change the partition with:
          fw_setenv boot_part 2 && reboot

          But if the part is 2, change the partition with
          fw_setenv boot_part 1 && reboot

(Last edited by omostan on 27 Dec 2016, 23:37)