--- Log opened Sat Jan 01 00:00:18 2011
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20:54 < poppyer`> help. emBIOS infinite booting loop. 
20:54 < TheSeven> huh?
20:54 < TheSeven> which device?
20:54 < poppyer`> ipod nano2g. used to be alright.
20:55 < poppyer`> suddenly today says "FLT unclear"
20:55 < poppyer`> then dump a lot of hex code
20:55 < poppyer`> then into "could not load iloader theme." page, with menu "uninstall iloader/enter disk mode etc"
20:56 < poppyer`> whatever i select there, it just reboot and back to emBIOS/FLT unclear ...
20:56 < poppyer`> unable to get in disk mode.
20:57 < TheSeven> interesting
20:57 < TheSeven> what is that "lot of hex code"?
20:58 < poppyer`> like "00 33 14 ......" etc. the screen scrolls quite fast so unable to read details
20:58 < TheSeven> what the hell
20:58 < TheSeven> so what's the last part of it that's still in the scrollback?
20:58 < TheSeven> or rather on the screen?
20:59 < TheSeven> ("quit iloader" should return there)
20:59 < poppyer`> because the scroll is "scaning flash", after the scroll it clear the screen, and go to "could no load iloader theme." page with 5-item menu to select
21:00 < poppyer`> s/because/before/
21:00 < TheSeven> what do you see if you hit "quit iloader"?
21:01 < poppyer`> got it.
21:01 < poppyer`> "FTL recovery fail. Use disk mode to recover"
21:01 < TheSeven> does it state why?
21:02  * TheSeven leaves his desk for a few minutes
21:02 < poppyer`> No. Begining is hex codes "CC 85 ...." then Remaps: Back 0/1/2/3
21:02 < poppyer`> s/Back/Bank
21:20 < poppyer`> TheSeven: the UMSboot item is still working, ask me to copy UBI file. but the disk is unmountable, (i can see it as /dev/sda).
21:25 < TheSeven> poppyer`: where did you get that embios build from?
21:25 < TheSeven> this seems to be a debug build if it spams you with information like this
21:25 < TheSeven> do you have the embios tools installed on your pc?
21:28 < poppyer`> TheSeven: I just update from your iloader page -> updating
21:28 < poppyer`> about one week ago
21:29 < poppyer`> the file name is: ipodnano2g-installer0.2.1-iloader0.2.2-uninstaller0.2.0-embios0.1.4-embiosldr0.1.1-umsboot0.1.0-20101103-r250.bin
21:29 < poppyer`> no, i don't have any embios tools available here.
21:31 < TheSeven> we'll probably need to look at the debug buffer to figure out more
21:32 < poppyer`> no problem. where to start with?
21:32 < TheSeven> if you're very lucky, you might be able to salvage that information from the raw contents of that umsboot volume :) but that would be a hack
21:33 < poppyer`> i see. you mean the hexdump of /dev/sda?
21:35 < TheSeven> yep
21:36 < TheSeven> the sane way to do it would be installing the pyusb alpha, grabbing some files from our svn, and communicating directly with embios
21:36 < TheSeven> http://sourceforge.net/projects/pyusb/files/PyUSB 1.0/1.0.0-alpha-0/pyusb-1.0.0-a0.zip/download is the version you need
21:36 < TheSeven> and the contents of the /embios/trunk/tools tree in our svn
21:42 < poppyer`> the dd dump of umsboot volume only has first 136k, i can see it starts the boot sector with 55aa signature, and ends with  ascii messages of emBIOS
21:42 < TheSeven> i would expect it to be at the end of the volume, but umsboot might be zeroing that
21:45 < poppyer`> so, need to go to PyUSB? i see that is newer pyusb alpha a1, any specific reason to use a0?
21:47 < TheSeven> oh? need to look into that
21:47 < TheSeven> a0 is known-working though
21:48 < poppyer`> ok.
21:51 < poppyer`> TheSeven: kindly remind me the svn command to get the /embios/trunk/tools path
21:53 < TheSeven> svn co http://svn.freemyipod.org/embios/trunk/tools
21:56 < poppyer`> TheSeven: seems working. where to go next?
21:56 < TheSeven> sudo python embios.py console
21:56 < poppyer`> with the ipodnano in what status? umsboot?
21:58 < TheSeven> embios, right after the crash
21:58 < TheSeven> so either at that iloader recovery menu, or on the console
22:01 < poppyer`> PyUSB saids "No backend avaiable". I am in a mac osx, with libusb 0.1.12 installed, does it supposed to work in osx?
22:01 < TheSeven> hm, no idea
22:02 < poppyer`> so i need to get an linux.
22:45 < poppyer`> TheSeven: I managed to get the embios console working
22:45 < TheSeven> what does it say?
22:45 < TheSeven> can you pastebin the whole output?
22:45 < poppyer`> now I see the full log. 
22:45 < poppyer`> Connected to emBIOS Debugger v0.1.4 r250 running on iPod nano 2g
22:45 < poppyer`> [overflowed]
22:45 < poppyer`> 8 75  B9 9A B6 A7
22:46 < poppyer`> then lots of hex dump
22:46 < poppyer`> the end: Remaps:
22:46 < poppyer`> Bank 0
22:46 < poppyer`> Bank 1
22:46 < poppyer`> Bank 2
22:46 < poppyer`> Bank 3
22:46 < poppyer`> FTL recovery failed. Use disk mode to recover.
22:46 < TheSeven> wtf
22:47  * TheSeven suggests wiping that flash altogether.
22:47 < poppyer`> ...
22:47 < poppyer`> then it would need some special hardware to do the flashing?
22:48 < TheSeven> nope
22:48 < TheSeven> sudo python embios.py ipodnano2g_wipenand /tmp/wipelog.bin (IIRC)
22:48 < TheSeven> might also have been ipodnano2g-wipenand, no idea
22:49 < TheSeven> that should take like 10 seconds to half a minute
22:49 < TheSeven> afterwards unplug it and run disk mode
22:49 < TheSeven> disk mode  will probably stay at a white screen for another up to 30 seconds and then reboot
22:50 < TheSeven> after that, there shouldn't be any FTL recovery messages any more
22:50 < TheSeven> run sudo embios.py runfirmware 08000000 ipodnano2g-installer*.bin
22:50 < TheSeven> it will ask you if it should reformat the flash, choose yes
22:51 < TheSeven> after that everything should be back to normal (at least in theory)
22:54 < poppyer`> the ipodnano2g-installer*.bin is the one from your updating page (ends .bin), not the one from you installation page (ends .ipodx), right?
22:55 < TheSeven> yep
23:03 < poppyer`> TheSeven: thx, back to working.
23:05 < poppyer`> one issue is the default superfloppy vfat format (as single /dev/sda) is not mountable in osx.
23:06  * TheSeven wonders why apple can't handle that
23:07 < TheSeven> can't you just mount /dev/sda directly?
23:07 < poppyer`> it complains "Incorrect super block."
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--- Log closed Sun Jan 02 00:00:20 2011