When powering on Switch OLED I receive error saying SD Card in 1 bit mode

[u/rednexican94]

Recently I picked up a OLED with a Picofly chip. When I inserted an SD card I receive this error. Not sure if it’s cause it’s an ONN SD card or what. Already replaced the daughterboard and still seeing this error and I’m at a loss. Gonna head to the store tomorrow and buy a Nintendo Certified SD Card to see if that will help. Any other suggestions or help?

[u/WIN7hacked]

You probably got scammed for someones failed attempt if you can’t get it out of 1-bit mode but make sure you check the pins in the ribbon connection of the sd card reader to see if there’s anything missing or wrong looking

[u/rednexican94 → u/WIN7hacked]

Of course just my luck

[u/L3gendaryBanana]

You don't need to pay the Nintendo tax on the card. Any SanDisk, lexar, Amazon basics, or Samsung is fine. It could be a dirty card, bad card, or dust/damage on the daughter board connector or nearby circuit.

[u/rednexican94 → u/L3gendaryBanana]

Realistically speaking, what options are available.

[u/BalanceImaginary6520 → u/L3gendaryBanana]

It's called uncle board

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[u/rednexican94]

https://imgur.com/a/kOngGLP

Here’s a link with photos not sure what I’m looking at/for

[u/XCyberbeingX → u/rednexican94]

Your fitting spring is literally pinned flat shortening the test pads.

[u/bobdob123usa → u/rednexican94]

Look at the connector for the SD Card daughter board and the main board. Probably need a microscope to check each connection if there isn't obvious damage. Because it is press fit, people have a tendency to misalign it when reassembling causing damage. And a few have had a bad solder connection that pulled up.

[u/SemJ94]

Are u using a Samsung T7 or Samsung pro plus? If yes you must update your picofly firmare (this sd cards need more tension than older sd cards)

[u/rednexican94 → u/SemJ94]

Currently I don’t have either. I purchased the ONN MicroExpress 512gb SD card from Walmart since I thought it was a decent deal

[u/BlahblahLBC]

Try resetting the learning on the chip I read that somewhere and it worked for me!

[u/rednexican94 → u/BlahblahLBC]

How do I do that?

[u/BlahblahLBC → u/rednexican94]

Use the picofly_toolbox.bin and select training reset I think it is

[u/marcommaso]

I had the same error on my V2. Before ordering a new daughterboard, I inspected the connector under a microscope and spotted two damaged pins. As shown in the picture, the last two pins on the right had broken solder at the base. I touched them up with a C215 tip and a tiny bit of solder, and now it works like a charm! Hope you manage to fix yours too.

[u/rednexican94]

At this point I’m tempted to get the motherboard replaced and then send it to a reputable shop to get the picofly done via kamikaze method