V150D4_1.exe Readme For ease of reading turn on word wrap. Updating the firmware on your IBM DLT 20/40GB tape backup unit is an easily applied process. There are several methods of applying firmware to the tape units. The v150d4_1.img file is a binary file used by the utility program found in document MIGR-4GEGY8 on the IBM PC Support web site. v150d4_1.exe extracts to build v150d4_1.img diskette image file. This file contains the binary firmware programming code that is used in conjunction with BootASPI.EXE or 5500ASPI.EXE to update 20/40GB DLT tape drives to the D996 hex firmware version. By selecting back on your browser you will locate the utility files under the DLT Utilities selection.