A new version of the firmware for the interface 1541 Ultimate II is released. This version runs only on the 1541 Ultimate II cartridge (new fpga).

Version 2.6c includes some new features and fixes:

• NEW: Disk Copier from real drives to .D64 images.
• NEW: Command Interface.
• NEW: Ultimate-II DOS V1.0 (command target)
• NEW: Kernal replacement function.
• FIXED: TAP file recorder failed miserably on high latency write devices. Rewritten; should work better now.
• FIXED: Drive data timing has improved. Timing is now dependent on the data track itself, not on the speed setting of the VIA. This fixes some protected titles in G64 format.
• FIXED: USB stick present on boot time caused the Ultimate-II to crash when loading a file from SD at initialisation time (kernal rom / drive rom)
• FIXED: Starting a program with RUN sometimes caused the ultimate to become unresponsive when freezing afterwards.
• FIXED: Now reads USB sticks with FAT16 format, but without partition table.

Release notes:

• This version does *not* include SID, but it does include the Ultimate Audio module. Different builds may become available upon request.
• The internal copier is still in beta. It has been tested with some of my drives, but there might be drives out there that won’t work. Make sure you have an IEC link from the Ultimate to a real drive to use this function. (No need to have a link to the computer.) There is still no retry mechanism; sectors that failed to read correctly will not be re-read.
• The Kernal replacement function is critical when it comes to timing. Tested on two machines only. Might not work on C128.

Download: 1541 Ultimate II Firmware v2.6c (1235)

source: 1541ultimate.net