Zephyr 4580 CB problems with jtagging?

[farkedup]

First of all let me start by saying I've successfully jtagged 135 systems so far and about 30 Zephyr from this same exact supplier....

Every Zephyr 4580 that I've encountered of course has to use the falcon xell... Thats not an issue thats just a statement...

NOW the problem I'm having is I've started finding some 4580's that no matter how many times I redo the jtag points I end up with an E79. I now have 4 zephyrs that are doing this sitting here.

What I've tried:
1) Redoing solder points
2) tried both xell and xellous both the falcon and the zephyr files
3) 330 ohm resistors and jumper wires both tried.
4) I have a huge pile of systems that are from the exact same batches everything came in mint condition factory sealed everything is CB 4580 and most work while some just E79 on me no matter what I try

Any other suggestions?

 

[M AzeeM K]

Have you tried to use the alternate Jtag points?

 

[agt_dale_]

Having severe issues with a 4580 myself...XBR works fine (using Falcon base/modified SMC), but can't get FB 0.32 or 0.4 to work at all.
For whatever it's worth, I AM using the alternate points....referred to as "BoxxDr" method.
TMS = AUD_CLAMP, TDI = DB1F1.
Board serial = XXXX11473905. I'm not original owner, board has been refurbed by M$ once (new style refurb sticker).