Why Certain Existing Card Users are Suddenly Unable to Access Doors and Software Transaction Log Shows "Unknown Card Number" Transaction
Problem (Issue) Statement: | Why certain existing card users are suddenly unable to access doors and software transaction log shows "Unknown Card Number" transaction |
Description: | Why certain existing card users are suddenly unable to access doors and software transaction log shows "Unknown Card Number" transaction? |
Related Software: | |
Related Hardware: |
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System Application: |
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Symptom and Finding: | A complaint was lodged where certain existing card users are suddenly unable to access some of the doors in the facility. Note that these doors are previously accessible by the affected card users.
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Cause: | This situation happened to some of the controller models with the new flash chip (SST26F032B SPI Flash) and a firmware bug affecting proper handling of card memory. The bug only occurs when new card data are indexed into pages in scenarios where the last 2 digits of the card number are the same, and that the card page is full (exceeded 128 card data entries per page). In the event when the page is full, and when users issue 'add new card' command, this action will clear the page and controller will subsequently store the new card only due to the bug. This therefore results in card data being lost and the 'Unknown Card Number' transaction will be logged when existing card users flashed the valid card.
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Solution: | Warning!
. . Summary
Step by Step:
Step 1: Initialize a fresh database for the software and connect the software with the respective controller model (affected by the missing card user issue when retrieving card data from controller).
Step 1: For xPortalNet software, go to xPortalNet Server > Utilities.
Step 1: For xPortal3000 software, go to xPortal3000 Client > Update Firmware:
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Date Documentation: | 25/5/2018 (Rev 1.0) |
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