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Nintendo Wii U
Possible to Repair Wii U System Memory Error Code 160-0103?
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<blockquote data-quote="Razor83" data-source="post: 7269430" data-attributes="member: 237184"><p>So I was doing some reading about eMMC and have come up with a theory/possible cause of the 160-0103...</p><p></p><p>I was reading Wiiubrew's information about the different types of eMMC chips used in the Wii U:-</p><p><a href="http://wiiubrew.org/wiki/EMMC_NAND" target="_blank">http://wiiubrew.org/wiki/EMMC_NAND</a></p><p>As you can see the eMMC can be either a Samsung 8GB/32GB chip, or a Toshiba 32GB chip.</p><p></p><p>Then I was reading bunnie's blog about hacking microSD cards:-</p><p><a href="https://www.bunniestudios.com/blog/?p=3554" target="_blank">https://www.bunniestudios.com/blog/?p=3554</a></p><p>Which explains that eMMC chips use a microcontroller to control all access to the flash memory, and that this microcontroller has its own firmware.</p><p>Then this sentence caught my attention:-</p><p></p><p>Since I already knew the the Wii U uses a Samsung eMMC chip on some models I thought maybe this microcontroller firmware bug could also be affecting the Wii U.</p><p></p><p>I googled and read through a number of xda forum threads with info about the bug, the most interesting of which was this one:-</p><p><a href="https://forum.xda-developers.com/showthread.php?t=2096045" target="_blank">https://forum.xda-developers.com/showthread.php?t=2096045</a></p><p>It seems that this bug affects eMMC chips which use the <strong>VHX microcontroller</strong>, and wouldnt you know it the Samsung 32GB chip (KLMBG4GE4A-A001) used in the Wii U also uses the VHX micocontroller! (The Samsung 8GB chip uses the VFX_U microcontroller, which may or may not have the same bug)<strong><EDIT></strong>A Russian site I found suggests that both the VHX and VFX_U microcontrollers can be affected by the bug.</p><p></p><p>As far as I can tell the affected Samsung eMMC chips were manufactured throughout 2012, so a good number of early Wii U consoles could be affected (Nintendo originally hoped to sell 5.5 million Wii U consoles by April 2013) It appears the problem is not the the flash memory itself, but rather the wear levelling data can potentially become corrupted after specific commands are issued.</p><p></p><p></p><p>I imagine Super Smash Bros reads/writes to the eMMC much more often than most other games (Saving trophies etc) so its more likely to trigger the bug.</p><p></p><p>Since this is a low level eMMC error there is unfortunately no way for the Wii U to format/delete the corrupted data. However Samsung did issue a VHX microcontroller firmware update for some affected phone models by using vendor specific commands:-</p><p><a href="https://forum.xda-developers.com/showpost.php?p=38112844&postcount=79" target="_blank">https://forum.xda-developers.com/showpost.php?p=38112844&postcount=79</a></p><p>Some people suggest that this firmware update would require the eMMC to be formatted at the same time, whilst others suggest it should be possible to apply the update without formatting the data.</p><p></p><p>At this point I think what we really need is a homebrew app which can use the Samsung vendor specific commands to first retrive an extended SMART report from the eMMC, to ascertain if the chip indeed has one of the affected firmware revisions. After that we likely need a way to dump the eMMC microcontrollers firmware, so that we can then dump the firmware from a later batch of Samsung eMMC with a known 'good' firmware, and then apply that firmware to the older Samsung eMMC with the 'bad' firmware. Alternatively we can try and apply the same "fw.h" update file Samsung used on Android phones and hope for the best.</p><p></p><p>Anyone up to the challenge? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite55" alt=":D" title="big grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="Razor83, post: 7269430, member: 237184"] So I was doing some reading about eMMC and have come up with a theory/possible cause of the 160-0103... I was reading Wiiubrew's information about the different types of eMMC chips used in the Wii U:- [URL]http://wiiubrew.org/wiki/EMMC_NAND[/URL] As you can see the eMMC can be either a Samsung 8GB/32GB chip, or a Toshiba 32GB chip. Then I was reading bunnie's blog about hacking microSD cards:- [URL]https://www.bunniestudios.com/blog/?p=3554[/URL] Which explains that eMMC chips use a microcontroller to control all access to the flash memory, and that this microcontroller has its own firmware. Then this sentence caught my attention:- Since I already knew the the Wii U uses a Samsung eMMC chip on some models I thought maybe this microcontroller firmware bug could also be affecting the Wii U. I googled and read through a number of xda forum threads with info about the bug, the most interesting of which was this one:- [URL]https://forum.xda-developers.com/showthread.php?t=2096045[/URL] It seems that this bug affects eMMC chips which use the [B]VHX microcontroller[/B], and wouldnt you know it the Samsung 32GB chip (KLMBG4GE4A-A001) used in the Wii U also uses the VHX micocontroller! (The Samsung 8GB chip uses the VFX_U microcontroller, which may or may not have the same bug)[B]<EDIT>[/B]A Russian site I found suggests that both the VHX and VFX_U microcontrollers can be affected by the bug. As far as I can tell the affected Samsung eMMC chips were manufactured throughout 2012, so a good number of early Wii U consoles could be affected (Nintendo originally hoped to sell 5.5 million Wii U consoles by April 2013) It appears the problem is not the the flash memory itself, but rather the wear levelling data can potentially become corrupted after specific commands are issued. I imagine Super Smash Bros reads/writes to the eMMC much more often than most other games (Saving trophies etc) so its more likely to trigger the bug. Since this is a low level eMMC error there is unfortunately no way for the Wii U to format/delete the corrupted data. However Samsung did issue a VHX microcontroller firmware update for some affected phone models by using vendor specific commands:- [URL]https://forum.xda-developers.com/showpost.php?p=38112844&postcount=79[/URL] Some people suggest that this firmware update would require the eMMC to be formatted at the same time, whilst others suggest it should be possible to apply the update without formatting the data. At this point I think what we really need is a homebrew app which can use the Samsung vendor specific commands to first retrive an extended SMART report from the eMMC, to ascertain if the chip indeed has one of the affected firmware revisions. After that we likely need a way to dump the eMMC microcontrollers firmware, so that we can then dump the firmware from a later batch of Samsung eMMC with a known 'good' firmware, and then apply that firmware to the older Samsung eMMC with the 'bad' firmware. Alternatively we can try and apply the same "fw.h" update file Samsung used on Android phones and hope for the best. Anyone up to the challenge? :D [/QUOTE]
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Possible to Repair Wii U System Memory Error Code 160-0103?
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