Via Callapple.org at http://www.callapple.org/vintage-apple-computers/apple-ii/announcing-prodos-2-4-2-for-all-apple-ii-computers/, thanks to John Brooks:

ProDOS 2.4.2 is a minor release with bug fixes and updates. It replaces ProDOS 2.4 and ProDOS 2.4.1.

Bugs fixed:
1. If a directory with more than 255 files was used, and then a different disk was used, a Bad Dir Error $51 was reported.
2. Bitsy Bye was not compatible with the Appletalk Workstation card.
3. Bitsy Bye was not compatible with the Mac LC Apple IIe card.

Updates:

1. Thunderclock driver is updated for years 2018 – 2023
2. ADT Pro v2.0.2
3. Copy II Plus v8.4
4. Added Cat Doctor’s extended utilities

If you’d like to help develop or test future versions, please contact me.
Enjoy.
-JB
John Brooks
Twitter: @JBrooksBSI

Download Disk Image: ProDOS_2_4_2.DSK

If you’d like to support John’s efforts to improve the Apple II, donations are welcome through Paypal