+.B Users of ATMEL+INTERSIL devices:
+If your AP firmware vendor extensions are auto-detected as
+.B SBRIDGES
+by ap-config, it means that your AP uses firmware made by smartBridges PTE: you will need to pass extra '-c community' to ap-tftp in order to perform actual upgrade.
+.B BY ALL MEANS, AVOID UPGRADE OF DEVICE THAT CONTAINS smartBridges FIRMWARE, with non-smartBridges FIRMWARE, AND VICE VERSA, even if the firmware names may look similar (see the warning above).
+Although there are checks in ap-tftp, that should avoid something such, be careful, and DO NOT TRY, UNDER ANY CIRCUMSTANCES, to circumvent this protection - if you do, you'd most likely end up with damaged flash content in your device. You got the warning.
+.TP
+.BR
+Remember: All firmware files with revision "1.4j.4" onwards are from smartBridges: unless you possess a device that is autodetected with 'SBRIDGES' vendor extension, DO NOT TRY TO UPGRADE TO smartBridges FIRMWARE!
+.IP o 3
+.B Users of ATMEL+RFMD devices: