Unable to update ePMP 1000 from v3.5

Hi, I try to update an EPMP 1000 from V 3.5 to 3.51 or 3.56, or whatelse and always appears the message, " Please perform device reboot before Upgrading software", I do that, and I try to upload te image file again, , and again face out the same message., in an endless loop. Can anybody help me? Thanks in advance
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Hello @aledaec,

you can try to push the radio through the recovery procedure: Recovery of flash corrupted 802-11n-based ePMP devices