Anti-update mods.....Just curious

Exactly what does the wire between the 2 legs on RP6207 and U5700 do/bypass?
The reason I ask is that while I was struggling with the 2000 box last night and trying to reset the net id after doing the Wembley trick and the Anti-update mod I thought that if I've done an anti mod,and U5700 is the chip where the net id is stored how does this wire stop CR1 becoming CR3?
This may seem a bit naive and basic to most of you but I'd appreciate it if you could put me wise.
I've also just finished a night shift (ahem) so be gentle.
:Cheers:
 
The way of preventing the update on some boxes, including the 2000 is to force pin 11 of both TSOPs to logic 1. Pin 11 is /WE which can make the chips non-writable.

The resistor array RP6207 is connected to those pins, the wire from U5700 is for the logic 1.
 
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