The WRT54G v7 is based on an Atheros WiSOC (mips), all of the others were based on Broadcom platforms (mipsel). Devices with less than 4MB storage and 16MB ram are a waste of time; there is no point in trying to support such limited devices.

Nov 12, 2012 The Making of a Beast: WRT54G Mods, Part One : 9 Steps Tearing It Down!!: First let me state the following: AS SOON AS YOU BREAK THE WARRANTY LABEL … Is the Linksys WRT54G obsolete? - The Silicon Underground May 14, 2020

LINKSYS Wireless-G Broadband Router 2.4 Ghz WRT54GS V7

Nov 12, 2019 WOL with linksys WRT54G version 7 Solutions | Experts Exchange

Configuracion de router linksys wrt54g 👍 como configurar

WARNINGThe WRT54Gv7 uses an Atheros AR2317 chip, has 2MB ROM, 8MB RAM and runs VxWorks. It is not supportedby DD-WRT as the WRT54Gv7 isn't Broadcom based. The WRT54G v7 will probably never be supported [edit]Gv7.2 Download Linksys WRT54G firmware | Linksys wrt54g firmware