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 2.6d includes some new features and fixes:

• FIXED: Ultimax mode forced now correctly implemented (solves issue with freeze and DMA load)
• FIXED: Updater now works on C128… (not all C128 issues are fixed)
• ADDED: Programmable cartrige emulation timing.
• IMPROVED: Some drive emulation enhancements.

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 all C128.

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

source: 1541ultimate.net