Firmware v2.09 Release Notes:   * Eliminated slight delay when entering Record mode. * Fixed problem with extended-ascii characters in file names. * Fixed Undo issue for recordings loaded directly from SD-Card, where the last two overdubs would be erased instead of only the most recent one.   JM4 Advanced Guide:   For in-depth info on features and functionality of the JM4 Looper not included in the Pilot's Handbook, check out:   JM4 Advanced Manual     WARNING: BACK UP YOUR FILES!