Following are the installation instructions for replacing the firmware in a TBS1000 oscilloscope with the firmware in this "zip" package. Contents of this zip package: Instructions.txt - this text file (v26.02) TBS1000.TEK - oscilloscope firmware Instructions: 1. Copy the firmware file, TBS1000.TEK, to the root or topmost folder of a USB flash drive. 2. Turn on the oscilloscope. 3. Insert the USB flash drive into the oscilloscope. 4. From the oscilloscope, push the UTILITY button. Select "File Utilities" option. Then select "more - page 2 of 2" option, select "Firmware Update" option, finally select "Update Firmware". The oscilloscope will reboot and the firmware update will begin automatically. The update will take about five minutes. Currently installed version: To verify the firmware version currently installed in the oscilloscope, push the UTILITY button, then select "System Status" option, and then select "Misc." option. Troubleshooting: - If the firmware does not load, verify that the USB flash drive is supported by the instrument. Insert the USB flash drive into the oscilloscope. A message should be presented that states "Please wait while the oscilloscope verifies your USB flash drive". If this message is not presented, try another brand of USB flash drive. - If the firmware does not load and the USB flash drive otherwise works fine, then the firmware files may be corrupted. Try downloading the firmware again. - New versions of firmware are released from time to time. Visit www.tektronix.com, myTek Resource, Software & Drivers page. Enter TDS1000B in the "Find by model or keyword" space and then click on go. - If you are still unable to load the new firmware, please contact the Tektronix Technical Support Center. Customers calling within the U.S.A. call 1-800-833-9200 press 3. Customer calling from outside the U.S.A. call 503-627-2400. Or send a message electronically at http://www.tek.com/Measurement/programs/tech_support/index.html