From my experience, I've read, reread, documented, and asked for procedural issues from my peers before attempting any type of change such as a SP.
Most recently, I installed an MR and my total downtime was 21 minutes with no issues.
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DarthBBerry
6-Time BlackBerry World Champion (2007-2012)
BlackBerry® Certified Support Specialist v5.0
BlackBerry® Certified System Administrator v5.0
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