[arm-allstar] Upgrade remote site manually

[Roger Coudé]

I have a mountain top repeater not accessible until summer
kernel4.1.19-5-ARCH #1 SMP Tue Mar 15 19:59:28 MDT 2016 armv7l GNU/Linux
asterisk:Asterisk  built by root @ alarmpi on a armv7l running Linux on 2015-04-03 06:36:18 UTC

asterisk rptRPi2-3 Version 1.02beta Allstar - March 26, 2016 - WA3DSP, KB4FXC, W0AMN

Is it possible to remotely ssh and upgrade that system to the latest version of asterisk rpt without risk?
73Roger VE2DBE