VM40A/B Firmware Versions
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001.001 
- first version

001.002
- error in SMS sending removed

001.003
- French menu language added

001.004
- support for measurements to "Circulaire du 23/07/86" added
- minor bugs in SN640312a measurement fixed

001.005
- minor bugs in SMS alerts

001.006
- higher sensitivity of frequency detection in non-standard acceleration mode

001.007
- occasional switching off after USB commands fixed
- battery indication improved

001.008
- USB commands disabled when recording is active (answer "/n")

001.009
- more stable battry indicator

001.010
- start problems with poor USB supply solved

001.011
- occasional freeze at USB connection solved

001.012
- last record marked "END"
- problems in detection of USB power solved
- problems with 2nd SMS receiver solved
- indication of "Ext" instead of "USB"
- invalid "²" SMS character replaced by "2" 
- menu "SMS ALARM SETTINGS" removed from "GSM SETTINGS"
- records are only counted once after switching on (save time)
- after start of recording "Wait" is indicated until the waiting time is over

001.013
- disabling SMS alarms closed recording menu - solved
- software bug in SD card detection caused occasional crashes

001.014
- SMS alerts also at roaming connections
- no SMS alerts if network connection already established in GSM menu (fixed)
- bug in display of recorded SN640312a measurements fixed
- single records can be set to zero in the recording menu

001.015
- bug in USB transmission of frequencies >99 Hz fixed

001.016
- at low battery shut-down a record with trigger event "BAT" is written
- at full memory a record with trigger event "MEM" is written
- problems with some SD card types solved

001.017
- longer timeout in SIM card detection avoids problems with some SIM cards

001.018
- self re-triggering relay alerts in very sensitive modes fixed

001.019
- in SN 640312a max. value of vector sum instead of X saved
- very small values are not zeroed anymore