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Failsafe Upgrade Feature
160
STEP 1: Update the Main Unit's boot loader to 0C4 and firmware to
3E5 or later
Therearetwotypesofscenarios:
• ThebootloaderversionoftheMainUnitisearlierthan0C4—you
mustupgradeitsbootloaderto0C4orlater.SeeUpdatingMain
UnitsforFailsafeUpgradeFeatureinMainUnits(onpage157)for
details.
• Thebootloa
derversionoftheMainUnitis0C4orlater,butits
firmwarecodeisearlierthan3E5—downloadthefirmwareofversion
4.2orlater,andupgradeitbyfollowingtheproceduredescribedin
GeneralUpdateProcedure(onpage153).Thefirmwaref
iletochoose
isP2‐xxx.hex(xxxrepresentstheversion).
STEP 2: Keep only one Stacking Unit connected
ToupgradetheStackingUnitforobtainingthefailsafecapability,only
oneunitisallowedtoconnecttotheMainUnitatonetime.Ifthereare
morethanoneStackingUnitornoStackingUnitconnectedtotheMain
Unit,youmustdothefollowing:
1. PowerofftheMainandStackingUnits
.
2. ConnectonlyoneStackingUnittotheMainUnit.
3. PowerontheStackingUnitfirst.
4. PowerontheMainUnit.
5. SettheMainUnitʹsstackingsupportto1.Seethe“StackingSupport”
sectionunderParagonIIFrontPanelDisplayandControls(onpage
16)foradd
itionalinformation.
6. SettheStackingUnitIDto1.Seestep6ofInstallingtheParagon
P2‐UMT1664SStackingUnit(onpage35)fo
radditionalinformation.
7. Poweroffbothunits.
8. PowerontheStackingUnitfirst.
9. PowerontheMainUnit.
STEP 3: Update the Stacking Unit's firmware
BothoftheStackingUnitʹsfirmwarecodeandbootloaderwillbe
updatedafterthefollowingisdone.
1. MakesuretheMainUnitisconnected,vianetwork,tothePCthat
willrunParagonUpdate.
2. LaunchtheParagonUpdateutility:select“R‐P2SBL‐0C5.hex”asthe
firmwarefile,andclickthe“Sen
dToParagon”button.SeeParagon
ManagerUserGuidefordetailedoperation.