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OZ version

Downgrade Method

Notes

5.0

Index U P D

None

4.7.1

Index U P D

The screen may occasionally stay off after the write to flash and the Z88 may not reset automatically.
To If that happens, leave for 5 minutes to be sure it has completed leave for 5 minutes, then reset manually.

< 4.7.1

RUN"ROMUPDATE.BAS" from BASIC

(the Z88 application version of RomUpdate does not work here)

Copy both romupdate.bas and romupdate.crc to RAM.
The screen will corrupt as the flash process begins. One row will blink. This is normal. Wait until complete.

image-20240520-225550.png

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