however still no result.
I'm able to navigate through the menu when booting with the right arrow button pressed, but I'm not able to select "reset user presets", there is a menu displayed with the entries, "Pedal Call -", "Buttons - ", "Pots - ", Ëncoders - ", "Flash - ", "SDRAM - ", "LEDs - ", "LCD - ", "Variax - ", "Jacks - ".
Navigating to the Flash item and press the save button for >5 seconds but no reaction for the device.
However when the POD has been booted in this menu I'm able to connect to it using Monkey.
With monkey I performed below described actions with the Device Firmware (overwrite user presets followed the steps as described by the wizard):
Flash Memory: Re-install Latest -> no difference, during this action the corrupt bank has been copied from bank 30A to 01A
USB Firmware: Re-install Latest -> no difference
Flash Memory, Rollback to version 1.21 -> no difference
Flash Memory, Upgrade to version 2.01 -> no difference
From the backup and Restore tab in Monkey:
Download and installed Pack Fanatic Bundle File: Studio & Live -> no difference (all banks including 01A are overwritten)
Removed the power plug for 30 seconds, etc.