Update 2019-10-30.md

Author: raullenchai

postmortem/2019-10-30.md

@@ -11,7 +11,7 @@ Updated: 2019-10-30
 In ~7am PDT of Oct. 30 2019, Mainnet stuck at height 1641780. Protocol dev quicky figured out the root cause (more than 1/3 delegates were not upgraded to 0.9.1 or 0.9.2). After notifying delegates and having them upgrading their nodes, chain operation came back round ~11am PDT of Oct. 30 2019. 
 
 # Impact
-TBD
+Chain stalled for about 4 hours and no damage has been reported so far.
 
 # Root Cause
 More than 1/3 delegates were not upgraded to 0.9.1 or 0.9.2 correctly:
@@ -26,7 +26,7 @@ After ~12 hours, all delegates have upgraded.
 
 # Next Steps
 **Better Communication With Delegates***
-Collect valid contact information from delegates.
+1. Collect valid contact information from all delegates.
 
 **Easier Upgrade***
 1. Tie config/genensis yaml versions with iotex-core binary - https://github.com/iotexproject/iotex-core/issues/1585