Hi Luiz,
Any reason for upgrading to the 'T' track?
I find the mainline track to be more stable and w/o incurring licensing costs, I suggest going with 12.4(21) or 12.4(23) with IP IPSec 3DES
c7200-ik9s-mz.124-21.bin
or
c7200-ik9s-mz.124-23.bin
HTH,
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Edison.