WRT54G v5 not compatible with 3rd party firmwares
It’s been reported at LinksysInfo that WRT54G v5 is not compatible with 3rd party firmwares. The problem lies on the amount of RAM and the OS is VxWorks instead of Linux.
If you want to use 3rd Party Firmwares, DO NOT BUY A WRT54G v5.
Known serial numbers (first 4 characters) vs versions / Chipsets:
CDF0 = WRT54G v1.0 / ADM6996L Chipset
CDF1 = WRT54G v1.0 / ADM6996L Chipset
CDF2 = WRT54G v1.1 / ADM6996L Chipset
CDF3 = WRT54G v1.1 / ADM6996L Chipset
CDF5 = WRT54G v2.0 / ADM6996L Chipset
CDF7 = WRT54G v2.2 / BCM5325EKQM Chipset
CDF8 = WRT54G v3.0 / BCM5325EKQM Chipset
CDF9 = WRT53G v3.1 / BCM5325EKQM Chipset
CDFA = WRT54G v4.0 / BCM5352E Chipset
CDFB = WRT54G v5.0 / BCM5352EKPB Chipset <- Stay away from this one.