A new version of the V-Logger firmware (v2.5) has been released. The firmware can be downloaded here. Instructions on how to install the new firmware on your V-Logger can be found here. Version 2.5 of the firmware includes a number of enhancements, including the ability to access data stored on the logger even if it becomes non-functional due to a self-test failure during startup.
During start up, the logger checks all of the critical functions as well as self-calibrates. Should any of these tests fail, the logger will not operate. This update will allow you to bypass the self-test and retrieve any data currently stored on the logger prior to sending it in for repair.