It does not sound to me to have seen this issue and it is important in case someone does not know it yet.
Medtronic is informing users of the Minimed 640g insulin pump with software version 4.10 and 2.6 motor (only these pumps are the ones that will receive the letter, the others are correctly) to inform that some units did not emit the expected sounds during the alerts, alarms or mermaids associated with the operation of the pump and with the alerts per high or low glucose level.Therefore, patients who have a pump with software version 4.10 will receive a letter with the indications of the tests to be performed and the steps to follow.This letter explains how to perform an audio test to see if the pump is experiencing this problem.If you do not exceed the audio test, it will no longer be possible to recover this functionality and a replacement will be required so that you can use the pump audio functions.And if the pump exceeds the test, this test will have to be carried out regularly to ensure that the audio continues to work.
The steps to follow for this test are found on the special website enabled by Medtronic (external link).
Link
Link