ZuluSCSI firmware v2026.04.08

What's Changed

• RP2MCU: Fix FAST-20 regression by reverting fd45a1e by @morio in #782
• Add support for creating VHDv1 images in initiator mode and add VHDv1 support to CREATE image generator by @morio in #781

Changes in the previous v2026.04.04 release

• Fix prefetch invalidation by @PetteriAimonen in #773
• Fix tape SPACE status reporting (Part of #757) by @reinauer in #765
• Add insert SD card splash screen by @morio in #776
• Preliminary/Experimental AS/400 HDD support by @morio in #777
  • Special thanks to @yyzkevin for the initial PoC, which was used as the basis for this implementation, which we then got working on an SCA-equipped Model 170.

Changes in the previous v2026.03.22 release

• RP2350: Initialize the RM2 if a network device configured, even if no SSID is specified by @chainq in #768
• Add RP2350 SCSI bus sniffer functionality by @PetteriAimonen in #767
• Disk VERIFY commands by @reinauer in #762
• RP2 bus timings by @reinauer in #763

Which firmware do I need?

Copy the universal .zip file to your SD card and then power it on, without extracting the contents of the zip file. The ZuluSCSI firmware will take care of the rest.

If you have a ZuluSCSI RP2040, or ZuluSCSI V1.x, and your ZuluSCSI has firmware revision v2024.12.03 or later, you can also use the universal firmware update zip archive above. If your firmware version is earlier than v2024.12.03, you will need to use the .bin file below, as a one-time operation, after which you can switch to using the universal firmware zip file for all future firmware updates.