Hardware SX Core / HWFLY schematics question

[Otakon273]

Good time of day. I have SX CORE chip without usb, so to flash chip I soldered the contacts according to the scheme.
Some shit happens and when tensioned, the wires broke away from the soldering points. After this after turn on console chip immediately gives green light and boot stock. But when i tried to solder the contacts where there wires were, chip blinks purple and successfully boot Hekate. After turn off console, next try of starting in goes to stock with green light. I again solder the contacts, and than chip boot normally, after next shutdown.
I think that either some resistor is damaged, or a bad connection. Actually, I would like to know the value of the resistors, or where exactly these contacts go. But it seems to me that they go to the USB port, and due to problems with the resistor, the chip boots in USB connected mode.

 

[randy_w]

Those 2 resistors are used to create 90ohm impedance on differential pair (part of usb specification). Usually they are 20-30Ohm. They are only used for USB communication so even if they are missing your modchip should still work.

Did you successfully update the firmware? Also maybe check voltage regulator's output since you mentioned it only works with usb cable connected.

 

[Otakon273]

Those 2 resistors are used to create 90ohm impedance on differential pair (part of usb specification). Usually they are 20-30Ohm. They are only used for USB communication so even if they are missing your modchip should still work.

Did you successfully update the firmware? Also maybe check voltage regulator's output since you mentioned it only works with usb cable connected.

Yes, firmware update was successful.
But chip not work with usb. When I start console, there is green light, and immediately boot stock. But after 1-2 minutes all not work again.
Maybe something with recognition of usb connection?
So, what about resistor where 5v connects, not data+/- pair. Is there same value?

 

[Badablek]

R6 (white) : 22 Ω
R7 (green) : 22 Ω
R8 (red) : 100 Ω

you can find full SX Core datasheet here

 

[Otakon273]

R6 (white) : 22 Ω
R7 (green) : 22 Ω
R8 (red) : 100 Ω

you can find full SX Core datasheet here

Thanx a lot. In the end I think there is problem in contact where VC0 connect to R8 and 30 pin of chip.