twrp installation, still boot on stock recovery

opensuse 13.1 x86_64
heimdall 1.4.1

Samsung s2 plus i9105p

i installed with no problem twrp-3.0.2-0-s2vep.img from twrp site or twrp-recovery-2.6.30_4.2.2.img from http://ift.tt/1a93NRB

but when i boot with home+volume up+power the stock recovery is launched instead of twrp.

log of the flashing:
************************************************** ************************************************** ******
x@linux-b4lz:~/rpmd/samsung> heimdall flash --RECOVERY twrp-3.0.2-0-s2vep.img
Heimdall v1.4.1

Copyright (c) 2010-2014 Benjamin Dobell, Glass Echidna
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This software is provided free of charge. Copying and redistribution is
encouraged.

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development please consider donating:
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Initialising connection...
Detecting device...
Claiming interface...
Setting up interface...

Initialising protocol...
Protocol initialisation successful.

Beginning session...

Some devices may take up to 2 minutes to respond.
Please be patient!

Session begun.

Downloading device's PIT file...
PIT file download successful.

Uploading RECOVERY
100%
RECOVERY upload successful

Ending session...
Rebooting device...
Releasing device interface...

x@linux-b4lz:
************************************************** ************************************************** ******

from xda-developers http://ift.tt/2bsh0Jq
via IFTTT