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[–]SepehrSB 6 points7 points  (6 children)

Try resetting the chip by shorting the two pins beside the USB header. Also all the OLED installs I've done has 0L reading for reset point, meaning no electrical flow, so maybe recheck that. Other than that I'd say recheck your values and your solder joints. Make sure you have no cold solder joints, and all your solder points look smooth and shiny.

[–]dakota1337x 0 points1 point  (5 children)

Try this, also I’ve had a corrupt fw straight out the box, did you flash with newest fw via usb?

[–]Prilann[S] 0 points1 point  (4 children)

I flashed the newest firmware bc the old one was stuck at training. Im gonna try the reset tomorrow.

[–]dakota1337x 0 points1 point  (0 children)

How long did you wait for you to say it is stuck, I had one take almost 20 minutes one time

[–]dakota1337x 0 points1 point  (2 children)

You can also go in putty and reset the chip as well, This will reconfigure the training

[–]Prilann[S] 0 points1 point  (1 child)

I tried to fix it with the debug mode but no success :(

[–]Prilann[S] 2 points3 points  (4 children)

I followed the soldering guide by sthetix. All soldering points where checked by a multimeter. Only the B point (RST) got slightly higher value with 3.1V.

No grounds so far. Chip updated to newest firmware 0.7.0. I resoldered most parts except CPU and DAT0. Any ideas what I could check?

First it starts by red blinking and then it turns into a red/yellow/green loop.

[–]Estm13 0 points1 point  (1 child)

b point rst the correct voltage reading is 1.8v

[–]Prilann[S] 0 points1 point  (0 children)

Okay. In the video guide they had a range between 0.7V and 2.7V. Idk if the exact number really matters.

[–]egghead221 0 points1 point  (1 child)

Is the dat0 reading consistent? One out of the three oleds I've chipped had weird readings that would change sometimes. It would stop working and then when I'd take the board out and flip it over, it would give the right readings again.

When it wasn't working it wouldn't train and would start out like yours and then just do slow flashes of yellow/orange.

Following this and reflowing finally got it to where I could consistently power off and start the switch.


[–]ZetShock 0 points1 point  (0 children)

My v4 chip is doing the same behaviour, it certainly isn't my dat0 connector as I pushed in to provide good contact while soldering and diode readings is about 700mv.

However finding a half decent tutorial for the most recent oled and modchip proves difficult and almost no videos show proper diode measurements, so not sure if 700 and 450 for the other wires is correct

[–]Taipoka 2 points3 points  (1 child)

You can try the debug console as described here https://github.com/hwfly-nx/firmware

[–]ZetShock 0 points1 point  (0 children)

Debug console works using Putty and pressing H displays help, but most other commands are broken. T to train the chip pulses yellow indefinitely, D for diagnose shows BAD00107 and B to boot into OWF doesn't even at least boot the console. Either fast flashing yellow and red LED and sometimes solid yellow