tomato-<VER>-<ND|K26>[USB]-<NNNN>[MIPSR2|MIPSR1][-subver]-[EDITION].[trx|bin]

<VER> - Tomato base version (i.e. 1.27)

<ND|K26> - indicates the platform:
  ND  - Tomato ND ("new driver") builds based on kernel 2.4
  K26 - Tomato builds based on kernel 2.6 (assumes ND)

[USB] - optional indicator of built-in USB support

<NNNN> - build number, i.e. 9043

<MIPSR2|MIPSR1> - architecture:
	MIPSR2 is for MIPS32 Release 2 CPUs
	MIPSR1 is for all other MIPS CPUs (MIPS32 Release 1)
Kernel 2.4-based builds are always MIPSR1.

[-subver] - optional subversion number, e.g. -beta02

[EDITION] - the build edition, e.g. Ext (Extras), VPN (OpenVPN) etc.