EventLog Analyzer service pack update failed due to database corruption

Hi,

While trying to follow the upgrade path detailed here ( https://www.manageengine.com/products/eventlog/service-packs.html) from 11000, the application of service Service Pack 11.0 (SP-11.0) failed with a database corruption error. I followed the backup procedure detailed here ( http://kbase.eventloganalyzer.com/how-do-i-take-backup-for-ela#). The version that we have installed is 11072.

Here is the wrapper when trying to restart services:

STATUS | wrapper | 2018/01/13 11:45:11 | --> Wrapper Started as Service
STATUS | wrapper | 2018/01/13 11:45:11 | Java Service Wrapper Professional Edition 32-bit 3.5.15
STATUS | wrapper | 2018/01/13 11:45:11 | Copyright (C) 1999-2012 Tanuki Software, Ltd. All Rights Reserved.
STATUS | wrapper | 2018/01/13 11:45:11 | http://wrapper.tanukisoftware.com
STATUS | wrapper | 2018/01/13 11:45:11 | Licensed to Zoho Corporation Pvt. Ltd. for ManageEngine EventLog Analyzer 10.0
STATUS | wrapper | 2018/01/13 11:45:11 |
STATUS | wrapper | 2018/01/13 11:45:12 | Launching a JVM...
INFO | jvm 1 | 2018/01/13 11:45:12 | WrapperManager: Initializing...
INFO | jvm 1 | 2018/01/13 11:45:13 | Starting Server from location: D:\LogAnalyzer\EventLog
INFO | jvm 1 | 2018/01/13 11:45:16 | This copy is licensed to Pro Teck Services
INFO | jvm 1 | 2018/01/13 11:45:16 |
INFO | jvm 1 | 2018/01/13 11:45:18 | Previous Patch not applied properly, hence contact support team
INFO | jvm 1 | 2018/01/13 11:45:18 |
INFO | jvm 1 | 2018/01/13 11:45:18 | System halted
INFO | jvm 1 | 2018/01/13 11:45:18 |
INFO | jvm 1 | 2018/01/13 11:45:18 |
INFO | jvm 1 | 2018/01/13 11:45:18 | Problem while Starting Server
STATUS | wrapper | 2018/01/13 11:45:21 | <-- Wrapper Stopped

Can you let me know how this could have happened even though the service was stopped?

Thank you.