Hardware Hacking Switch OLED 256gb NAND upgrade

[RatchetRussian]

SM662PEF BFST I can confirm it's working fine.
But the 4k random r/w are garbage compared to other emmc brands.

Wow... even worse than my cheap Micro SD.

256gb really does seem like the sweetspot. But having found a 512gb module for only $120, I may still give it a try.

 

[paotao]

Hello!
When I unsoldered my NAND, I made a serious mistake and ruined the switch's motherboard. I'll have to live with that.

Nevertheless, I went looking and tried to find out where the pin lines run.
The pins are ripped out as above.
Below I looked for the connection points and didn't find any.
The round ones have a connection in the middle. Not the “oval” ones.
Are they not connected at all?
Maybe someone was as successful as me and knows more.

 

[evil_santa]

Hello!
When I unsoldered my NAND, I made a serious mistake and ruined the switch's motherboard. I'll have to live with that.

Nevertheless, I went looking and tried to find out where the pin lines run.
The pins are ripped out as above.
Below I looked for the connection points and didn't find any.
The round ones have a connection in the middle. Not the “oval” ones.
Are they not connected at all?
Maybe someone was as successful as me and knows more.

Please make a bigger picture so I can see the whole pins also mark the broken pins in the picture.

 

[paotao]

Please make a bigger picture so I can see the whole pins also mark the broken pins in the picture.

The poor image quality is due to the microscope.
At the end of next week I will have a new (better) one and be able to take a new picture.

 

[FR0ZN]

All pins marked as NC (Not Connected) can be ignored.
All pins marked as RFU (Reserved for future use) can also be ignored.
The other pins however might cause you trouble.
By the looks of it, you mainly ripped off voltage pads.
You might be lucky that the remaining voltage pads can power the eMMC but that's something you'd have to try.

 

[evil_santa]

View attachment 448075

All pins marked as NC (Not Connected) can be ignored.
All pins marked as RFU (Reserved for future use) can also be ignored.
The other pins however might cause you trouble.
By the looks of it, you mainly ripped off voltage pads.
You might be lucky that the remaining voltage pads can power the eMMC but that's something you'd have to try.

Yes I have nothing to add

Post automatically merged: Jul 19, 2024

The poor image quality is due to the microscope.
At the end of next week I will have a new (better) one and be able to take a new picture.

View attachment 448049

If you need someone to fix it I'm also from Germany.

 

[impeeza]

You could use a Sandwich adapter to Modchip, that is a double sided PCB one side is solder to the board and the other is soldered to the chip, on that PBC you repair the missing points.

 

[paotao]

View attachment 448075

All pins marked as NC (Not Connected) can be ignored.
All pins marked as RFU (Reserved for future use) can also be ignored.
The other pins however might cause you trouble.
By the looks of it, you mainly ripped off voltage pads.
You might be lucky that the remaining voltage pads can power the eMMC but that's something you'd have to try.

Thank you very much. It looks better than expected.
However, I opened the marked pins. I can't find any contacts under it.

You can't see all the damaged pins in the picture. In some cases the material is torn all around.
Soon I will get a better microscope and take a new picture.

Post automatically merged: Jul 20, 2024

You could use a Sandwich adapter to Modchip, that is a double sided PCB one side is solder to the board and the other is soldered to the chip, on that PBC you repair the missing points.

The pins on the board are damaged. The sandwich adapter would have to supply the pins differently. Are there such parts?

 

[FR0ZN]

Thank you very much. It looks better than expected.
However, I opened the marked pins. I can't find any contacts under it.

You can't see all the damaged pins in the picture. In some cases the material is torn all around.
Soon I will get a better microscope and take a new picture.

View attachment 448317

Post automatically merged: Jul 20, 2024

The pins on the board are damaged. The sandwich adapter would have to supply the pins differently. Are there such parts?

RFU pins are no problem

 

[impeeza]

RFU is pins are no problem

¿?

 

[br0ke23]

¿?

Read up higher

RFU is reserved for future use is stated

 

[impeeza]

Ok didn't understanded, so RFU is not needed to be connected?

 

[FR0ZN]

Ok didn't understanded, so RFU is not needed to be connected?

Correct

 

[Ysecond]

I have a question（maybe so stupid）.. Is that possible to replace eMMC with Micro SD？

 

[evil_santa]

no not possible, v1 maybe but no one tried it

 

[impeeza]

I have a question（maybe so stupid）.. Is that possible to replace eMMC with Micro SD？

No because the eMMC uses different protocol modes, no as the WiiU.

 

[zal16]

I have a question（maybe so stupid）.. Is that possible to replace eMMC with Micro SD？

No, because the eMMC has three phisical partitions: boot0, boot 1 and user partition (a.k.a. rawnand), but the sd cards has only the user partition. The bit width counts too, the sd card works only at 4-bit (versus 8-bit mode from eMMC)

 

[Lee2008]

This hard drive is really expensive, let's buy it and try it out.