ISL3893 Recovery

remove the power
press and hold the reset button
Apply the power
release the reset button.

When you are one of the lucky console cable users you should see:

Rescueing Boot for the ISL3893, version 0.5.2.0
Copyright (C) 1993-2002 Intersil Americas Inc. All Rights Reserved.
MAC Address: 00.60.b3.13.36.b7
Forcing soft reset from Bootloaderú
Rescueing Boot for the ISL3893, version 0.5.2.0
Copyright (C) 1993-2002 Intersil Americas Inc. All Rights Reserved.
MAC Address: ***************
Entering recovery mode.
Trying ethernet...
Using Static IP address 192.0.2.93
apipa: got IP address 169.254.54.183
dhcp: got IP address 192.0.2.93, leasetime = -1, t1 = 4294966, t2 = 4294966

Strange... no dhcp .. after another go I got:

Rescueing Boot for the ISL3893, version 0.5.2.0
Copyright (C) 1993-2002 Intersil Americas Inc. All Rights Reserved.
MAC Address: 00.60.b3.13.36.b7
Forcing soft reset from Bootloaderú
Rescueing Boot for the ISL3893, version 0.5.2.0
Copyright (C) 1993-2002 Intersil Americas Inc. All Rights Reserved.
MAC Address: *************
Entering recovery mode.
Trying ethernet...
Using Static IP address 192.0.2.93
apipa: got IP address 169.254.54.183
dhcp: got IP address 192.168.1.240, leasetime = 432000, t1 = -268410696, t2 = 47 1923431

Conclusion: 192.0.2.93 should always work, dhcp works less reliable.

After this recovery boot you can upload firmware below 1.7MB by using tftp