Author Topic: does anyone know what the biggest size of 48pin tsop nand is?  (Read 1462 times)

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Offline psxpetey1

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #25 on: October 17, 2020, 02:28:35 am »
Appears 2 g nano is when they brought in encryption so installing rockbox and backing it up and then flashing the backup seems like it would work so basically any iPod with rockbox version should make it easy. I wonder if the 1g nano would just work automatically or if they just had different older encryption
 

Offline psxpetey1

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #26 on: October 20, 2020, 07:55:31 pm »
I would say all at least until 3g nano can use both 2 die and 4 die variants here is another project : https://hackaday.io/project/173985-ipod-nano-3rd-gen-mlc-nand-upgrade-software-hack someone is attempting with a TH58NVG5D1DTG20 tsop nand in the 3g nano and it is a 2die 2ce 2rb device Data Sheet: https://html.alldatasheet.net/html-pdf/523065/TOSHIBA/TH58NVG5S0FTA20/610/2/TH58NVG5S0FTA20.html. I wonder why apple used 2 and 4 die devices maybe just availability?
 

Offline bson

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #27 on: October 23, 2020, 11:11:29 pm »
The plot thickens.  I had a 2G nano which my wife has been using - she takes it to the gym (or used to, until the rona).  But she ALSO had one, with a dead battery - so I took that one, ordered a replacement battery and will experiment with getting Rockbox onto it.  RB has its own NAND flash device table, so isn't dependent on the stock firmware's support.  If the micron ones aren't already supported I'll add them and rebuild the firmware.  I might also see how hard it is to simply probe to figure out the geometry; this whole device table business is kind of cumbersome.  So waiting on a new battery here...
 

Offline amyk

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #28 on: October 24, 2020, 12:19:31 am »
The old-school (SLC/MLC) flash, besides number of CEs/dies, and total capacity, varies relatively little; the biggest distinction is between small and large-block types, but you are unlikely to find much small-block in production these days: https://www.micron.com/support/~/media/74C3F8B1250D4935898DB7FE79EB56E7.ashx

Newer parts that are more than 2 bits per cell have very strange layouts, including "void" areas in the address space. I never looked into that much and the manufacturers seem to be far more secretive about it.
 
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Offline psxpetey1

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #29 on: October 24, 2020, 09:52:02 pm »
Hows this for s thick plot, I saw your comment and decided to start messing with my 3g(still waiting for a battery and the chip.) So I plug it in and its booting to a grey screen, so I re solder the black battery wire it had come loose. Then put the back on and then it wouldn't boot at all the back wouldnt close and apparently a small screw was in there I punched it through the motherboard lol!

Well at least I've got 10 2gs on the way 8 1gs and 6 3gs(I got a nice lot on eBay for 30$) Well now I wait. I was trying to extract the firmware but free my iPod makes it sound like you need to do it on the iPod. That guide is not very clear lol. I was trying to find the table you were talking about in stock firmware to see what types of devices were listed.
 

Offline Guy Shemesh

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #30 on: October 24, 2020, 10:27:25 pm »
Sorry I saw this only now. Here my 2 cents..
The 3 problems with nand flash are:
1. it is a very fast moving market, with many devices becoming obsolete very fast (2yr for example).
2. The specification, although standarized, is not very stable and has room for manufacturer maneuvering.
3. Because NAND needs to be managed for bad sectors and wear leveling, it is often comes preprogrammed from the factory with 'hints' in the spare areas that were prepared during factory first scan of the IC's errors.

For these reasons, NAND is not plug n play IC like SD card or eMMC.. I believe even apple would probably need a software change to adapt to a different memory on board. It's a tough project that has a high likelihood of failing not because of the hardware difficulty but because of the software compatibility.

I would recommend not to spend time on this..
 

Offline amyk

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #31 on: October 25, 2020, 01:38:01 am »
The software will autodetect the size within a reasonable range. That's been true of the no-name generic Chinese players (s1mp3) I worked with, and there have been documented evidence from others that Apple is no different in this regard:

http://web.archive.org/web/20100721110312/http://wiki.s1mp3.org/How_to_add/change_a_memory_chip

 

Offline Guy Shemesh

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #32 on: October 25, 2020, 03:15:33 pm »
That's not an apple device and I wouldn't be so decisive on the predicted outcome as you - unless you have a reference to show a mod that worked on apple
 

Offline psxpetey1

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #33 on: October 25, 2020, 04:33:42 pm »
Have you done the mod? Don't tell people it wont work unless you can point to an example of it not working. Every time I've ever been in a community there are people saying THIS CANT BE DONE meanwhile there are people doing it. Even the iphones can have storage replaced and people even show it on youtube.
 

Offline Guy Shemesh

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #34 on: October 25, 2020, 04:54:18 pm »
I was speaking from a technical point of view. Of course I would be happy to be proved wrong and wish you success and good time on your project.
 
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Offline psxpetey1

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #35 on: October 25, 2020, 04:56:28 pm »
thanks no worries
 

Offline psxpetey1

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Re: does anyone know what the biggest size of 48pin tsop nand is?
« Reply #36 on: October 26, 2020, 04:48:24 pm »
Hey I was searching around and I found a guy who used to do piggy backs for the nano https://web.archive.org/web/20060411140102/http://www.multiarcade.com/ very cool! So I guess this used to work very well!He did double stack on both chnnels! I found this mentioned here: https://hackaday.com/2006/01/12/8gb-ipod-nano-hack/ and then went to they way back machine and found it ! apparently a guy did a mod with an ide drive https://mirror.uncyc.org/wiki/Ipod_Nano_200gb_Instructions/Page_3 only works for6 minutes until the battery dies but a very interesting read!
 

Offline psxpetey1

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The software will autodetect the size within a reasonable range. That's been true of the no-name generic Chinese players (s1mp3) I worked with, and there have been documented evidence from others that Apple is no different in this regard:

http://web.archive.org/web/20100721110312/http://wiki.s1mp3.org/How_to_add/change_a_memory_chip

back when you used to work with those did you have to repartition them? after you piggy backed how did you set up the software side of things
 


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