Well, it worked on my spare, no config switch. I guess it's time to try it on the production ones.
FESX424F Router#show ver
SW: Version 07.2.02rT3e3 Copyright (c) 1996-2010 Brocade Communications Systems, Inc.
Compiled on Oct 23 2015 at 05:43:57 labeled as SXR07202r
(4026161 bytes) Secondary SXR07202r.bin
BootROM: Version 07.2.00T3e5 (FEv2)
HW: Stackable FESX424HF-PREM (PROM-TYPE FESX424-L3U)
==========================================================================
Serial #: FL35067706
License: SX_V4_HW_ROUTER_SOFT_PACKAGE (LID: hnIKFLMMFL)
P-ASIC 0: type 00D1, rev D2 subrev 00
P-ASIC 1: type 00D1, rev D2 subrev 00
==========================================================================
333 MHz Power PC processor 8245 (version 129/1014) 66 MHz bus
512 KB boot flash memory
8192 KB code flash memory
128 MB DRAM
The system uptime is 35 seconds
The system : started=warm start reloaded=by "reload"
FESX424F Router#show flash
Compressed Pri Code size = 3613091, Version 03.1.00bT3e3 (SXR03100b.bin)
Compressed Sec Code size = 4026161, Version 07.2.02rT3e3 (SXR07202r.bin)
Compressed BootROM Code size = 524288, Version 07.2.00T3e5
Code Flash Free Space = 319488