BackBit C64 Firmware Version 2.1.3

- Fixed bug causing initialization to fail after changing autostart

BackBit C64 Firmware Version 2.1.4

- Use faster timing to improve performance on NTSC machines

BackBit C64 Firmware Version 2.1.5

- Programs load correctly when using BackBit KERNAL

BackBit C64 Firmware Version 2.1.6

- Can select multiple files (using space when not searching)

- Can erase multiple files (using F7 menu after selecting)

BackBit C64 Firmware Version 2.1.7

- Added "COMBINE" command in F7 menu when multiple items are selected (Combines to startup disk type)

BackBit C64 Firmware Version 2.1.8

- Updated D8B format to support more directory entries

BackBit C64 Firmware Version 2.1.9

- Can combine to BBT

- BBT defaults to original version on first save, instead of modified

BackBit C64 Firmware Version 2.2.0

- Don't relocate programs that are bigger than BASIC could be

BackBit C64 Firmware Version 2.2.1

- Added ability to change BASIC startup colors for C64 & VIC 20 (C128 coming soon)

- Added "OPTIONS" subsection in F1-UTILS menu

- Repaired unusual loading which broke in 2.0.9 (like Ultimate Wizard)

- Support for mounting VIC 20 cartridge in BBT

BackBit C64 Firmware Version 2.2.2

- Added read-only support for D80 & D82 file formats

- Fixed bug where CTRL-RETURN would not skip loading for disks

BackBit C64 Firmware Version 2.2.3

- Fixed bug where startup colors default to black (black screen in BASIC)

BackBit C64 Firmware Version 2.2.4

- Re-repaired Ultimate Wizard loading (re-broken in 2.2.2)

BackBit C64 Firmware Version 2.2.5

- Fixed C128 disk loading black screen introduced in 2.2.2

BackBit C64 Firmware Version 2.2.6

- Huge improvement in C128 loading/saving (obeys bank properly)

BackBit C64 Firmware Version 2.2.7

- Improvement in C128 banking detection not dependent on memory state

BackBit C64 Firmware Version 2.2.8

- Fixed bug in relative file creation on D64/D71

- Improved combining tool, added progress indicator, can combine REL files now

- Reverted fix for Odell Lake which broke Castle Wolfenstein

BackBit C64 Firmware Version 2.2.9

- Can now use dead test or diagnostic even when no SD card inserted

BackBit C64 Firmware Version 2.3.0

- Added support for booting disks on C128

BackBit C64 Firmware Version 2.3.1

- Improved bank loading compatibility on C128

BackBit C64 Firmware Version 2.3.2

- Improved handling of character reading to fix Phantasie games

BackBit C64 Firmware Version 2.3.3

- Fixed intermittent signal failure

BackBit C64 Firmware Version 2.3.4

- Improved combine to support additional relative files

BackBit C64 Firmware Version 2.3.5

- Added API command to rotate disks (see documentation)

BackBit C64 Firmware Version 2.3.6

- Added application extensions

BackBit C64 Firmware Version 2.3.7

- Support disk with application extension, enabling browse

BackBit C64 Firmware Version 2.3.8

- Automatically remove unused extensions on startup

- Shift-RETURN to invoke extension

BackBit C64 Firmware Version 2.3.9

- Fixed bug handling config folder

BackBit C64 Firmware Version 2.4.0

- Support Epyx Fastload CRT

- Show full path in PROPS menu

BackBit C64 Firmware Version 2.4.1

- Fixed bug causing rename to crash

- Can use DEL key to exit built-in programs (disk copy, set clock, startup colors)

BackBit C64 Firmware Version 2.4.2

- Ctrl-Shift-Enter to load entire folder with extension of selected item

BackBit C64 Firmware Version 2.4.3

- Added support for COMAL 80, WarpSpeed and Mach5 cartridges

BackBit C64 Firmware Version 2.4.4

- Added support for PLAster KERNAL replacement

- Better navigation for PROPS menu

BackBit C64 Firmware Version 2.4.5

- PLAster uses default KERNAL in built-in programs

- Rip & Burn drive detection fixed for drives past 8

BackBit C64 Firmware Version 2.4.6

- 80 column file browser for C128

- Obey 40/80 column key

- Removed "enabled/disabled" for C128 mode, instead combine C= key to go to 64

BackBit C64 Firmware Version 2.4.7

- Better multi-drive support, allowing same channel # on different drives

BackBit C64 Firmware Version 2.4.8

- Fixed NMI contention from last release

BackBit C64 Firmware Version 3.0.3

• Updated main routine to work on C128 (fixes break from 3.0.1)

BackBit Firmware 3.4.2 (Legacy) - Sadly, this appears to be the last firmware available for the original BackBit hardware, and the previous firmware versions are no longer available from the official firmware source.  Additionally, there is no mention in the revisions.txt file of what the changes are for this version.  Assuming it's feature parity with the BackBit Pro up to this version, then the changes would be:

• Version 3.4.2 - Sega Master System: Joystick debounce fix