IBM 3592 DRIVE MICROCODE FIXLIST

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D3I4_B12 (changes since D3I4_A9A)

Log page parameter corrections
Error recovery enhancements
Error reporting corrections and improvements
Servo positioning and motion control improvements
Correctly set tape alert 32 and assign a different error code for Read CRC errors

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D3I4_A9A (changes since D3I4_A14)

Load and Unload command and tape handling improvements
EOD (end of data) sequencing and control improved.
Improved tape tension and tape servo control.
Tension refresh on first load
Log Sense data and cartridge memory information updated correctly
Not panic when HBA re-use of OX_ID too quickly
Locate/Space command error recovery enhancements
Correct parameter checking with Write Attribute command

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D3I4_A14 (changes since D3I4_990)

Mode Sense and Log Sense improvements 
Read error recovery handling and enhancements
Write command and write error recovery handling and enhancements
Improved transfer length and overlap handling
Allow CM MAM page to be created on un-initialized, loaded WORM cartridges
Correct parameter checking for Write Attribute command
Host interface logging in and task management message improvements
Allow unload to invoke mid tape recovery after unspool operation failure
Tape servo improvements

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D3I4_990 (changes since D3I4_98F)

Tape run off while archive mode unload is performed in some condition

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D3I4_98F (changes since D3I4_91D)

Host transfer and command handling improvements           
Error recovery and error reporting enhancements
Improve mode page and inquiry reporting and handling
Return deferred error on any nexus before first DEA command
Implement RAO-GP method  
Servo signal check enhancements
Fix wrong motion status report (wrong "writing") to library           
FCR3356: Inquiry page C2h (drive bar codes)

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D3I4_91D (changes since D3I4_916)

Improve Mode Sense and Log Sense command handling
Allow larger allocation length for RRAO command
Undo Capacity scaling when format type is 2 (per standards)
Queuing and task management improvements
Host interface recovery improvements
Servo tape transport and tension control enhancements
Servo error handling improvements
MAM parameters updated on unload
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D3I4_916 (changes since D3I4_88C)

Improve log page data reporting
Improve LUN1 sense, data, and inquiry handling
Correct SCD display for error indications
Write Attribute command improvements
Error recovery enhancements
T10-OOB: do not clear KME error/info on repositions
Archive mode enhancement
Tape and head servo control improvements
ADI improvements
Set/clear Tape Alert 35, 36 for temperature/humidity warnings
Fibre and RoCE host interface enhancements and performance improvements 
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D3I4_88C (changes since D3I4_81A)

Improve host interface communications
Add tension control and error recovery procedures (ERP)
Servo control improvements
Improve cleaning trigger behavior
Fixes for log sense and tape alert data
Retension support during cartridge unload
Add JD media re-tension during unload (Archive Mode)
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D3I4_81A (changes since D3I4_7A9)

Ethernet interface improvements, link configuration intialization
Error detection and recovery enhancements
Display DIAGS message earlier in startup 
ADI interface message handling improvements
SCSI command interface improvements
Improved temperature measurements
FCR 3330 Update command timeout values  
FCR 3331 CRP: support encrypt only (and related) modes   
FCR 3333 Support DRA using standards based op-codes 
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D3I4_7A9 (changes since D3I4_7A4)

Improvements and fixes for Ethernet attached (ENA) host connections
Error recovery enhancements
SCSI command handling improvements
Remove write fence on certain write perms