Hi all!

Was wondering if anyone has any info on a Toshiba NAND IC I am working with (not for a case or data recovery, just playing around and practicing)

It is a TH58NVG7D2HTA20 (there are 7 of these from some torn down SSD I found). Can't find a datasheet specifically for this IC. ID is 98DEA48276.

Rusolut VNR has the ID in its database but refers to it as a TC58NVG6D2HTA00. When looking at the dump (before and after a read), something just seems off.

Any pointers or anyone ever come across this IC before?

Thanks!

It doesn't answer your question, but the attached document has ~700 NAND chip IDs.

_________________
A backup a day keeps DR away.

Yeah this IC is not represented there, but handy doc to have!
Thanks!

You can try and find similar datasheets and see if they list a READ ID, and include multiple chip numbers. or looking at a part number decoder might give you some insight. Newer Toshiba chip datasheets not that easy to find. Some chips I think may be produced for a certain vendor, and thus not widely distributed.

Toshiba Part decoder example:
http://www.triton-prog.ru/Dnl/Nand_Toshiba_NEW.pdf

So if this is correct, the differences between the VNR config and your chip appears to be:

TH 58NV G7 D2HTA 20 - Multi Chip | G7 128(=27 ) Gbits =16GB | Single Channel, 2 /CE
TC 58NV G6 D2HTA 00 - Single Chip | G6 64(=26 ) Gbits =8GB | Single Channel, 1 /CE

Found this site that decodes partnumbers... https://nand.gq/#/decode might be interesting for people investigating flash stuff.

this is the project: https://github.com/iTXTech/FlashDetector

iTXTech FlashDetector

Universal NAND Flash Part Number Decoder and Search Engine.

Universal NAND Flash ID Decoder and Search Engine.

Supported:

Flash Vendors:

Solidigm - Formerly Intel, now SK hynix
Micron
Western Digital - Formerly SanDisk
KIOXIA - Formerly Toshiba Memory
Samsung
SK hynix
YMTC

Controller Vendors:

Silicon Motion
ASolid
JMicron
Maxio
SandForce - Now Seagate
Chipsbank
Alcor Micro
Phison

HaQue, these are incredible resources! Thank you so much for sharing!

I am getting closer to solving it. Like I mentioned, the 7 ICs I have were already removed from what ever SSD they were originally attached to, so I am not sure exactly what controller was on it, but It seems like it was probably a JM. SA is XOR'd, but looks like I might have to extract the key manually as VNRs XOR analyzer is not finding the correct match.

To be fair, I don't have much experience with SSDs. People always send me the totally obscure stuff (old NAND, software controlled, etc.) so I have been trying to give myself some experience with more common stuff by practicing.

Again, thanks so much for the resources, these are great tools!

No worries, Sharing is Caring! If you have VNR, maybe support can help

Bah! Where's the fun in that?!

Lol.

Since it's just for research/practice, I will keep trying until I succeed lol.
I am now on to organizing blocks! Manually deciphered ECC and XOR key just need to rebuild FS now!

Amazing all the stuff you find, Franc!

_________________
Joep - http://www.disktuna.com - video & photo repair & recovery service