Flashing Cisco Linksys e3000 with DD-WRT.

It used to be much easier back in 2012. You could just flash the e3000 latest version of DD-WRT. But now you need a trailed build as the latest version of e3000 are not compatible with old Linksys or DD-WRT firmware for e3000. The Wiki at https://wiki.dd-wrt.com/wiki/index.php/Linksys_E3000 is slightly confusing. Here is the simplified version:

  1. Installed the trailed build mentioned in the Wiki (Initial Flash section), which currently is ftp://ftp.dd-wrt.com/betas/2010/08-12-10-r14929/broadcom_K26/dd-wrt.v24-14929_NEWD-2_K2.6_std_usb_ftp-e3000.bin .
  2. The latest builds are nv60k . They can only be flashed on 16673 or later version. So you need a mini-e3000.bin file like https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2018/10-10-2018-r37305/broadcom_K26/dd-wrt.v24-37305_NEWD-2_K2.6_mini-e3000.bin .  (based on comment at https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=569485&highlight=#569485 )
  3. Then you can flash the mega-nv60k.bin file from https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2018/12-20-2018-r38060/broadcom_K26/