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[21:48:18] <zxcasd> Hi all, I have a Nano 2G that decided to brick itself (using an Alpine interface in my BMW and also had, separately, a flaky USB cable, so it's possible that a short went through somewhere). Came up in Win8 as DFU device. Downloaded the libusb-win32 driver, now comes up as iPod Nano 2G Bootrom DFU but nothing recognizes it - iLoader flashes an error along the lines of "can't find disk", and since the bricking, iTunes has nev
[21:48:27] <zxcasd> oops
[21:48:28] <zxcasd> I was just exploring EmCore but my ultimate goal is to get it back to Apple firmware so it'll work in the car again. Any suggestions?
[21:50:58] <user890104> zxcasd: can you try if this works for you: http://freemyipod.org/wiki/Troubleshooting#DFU_Mode
[21:51:12] <zxcasd> checking;.. sorry, my googlefu has been weak today. :)
[21:52:06] <zxcasd> Aha - that's new. Okay, will try that now.
[22:05:58] <zxcasd> Getting closer. Followed the instructions using Python 2.7. Results in: "Connected to S5L8701 Bootrom DFU mode, USB version 1", followed by four "File" lines, ended by: " TypeError: unsupported operand type(s) for ^: 'long' and 'str'"
[22:05:59] <TheSeven> zxcasd: feel free to ask me if you run into any trouble doing that
[22:06:11] <zxcasd> Good timing :)
[22:07:33] <zxcasd> These were the "File" lines:
[22:07:37] <zxcasd> File "ipoddfu.py", line 33, in <module>     dev.uploadfile(sys.argv[1])   File "C:\temp\rec\libipoddfu.py", line 247, in uploadfile     self.upload(data, exploit)   File "C:\temp\rec\libipoddfu.py", line 213, in upload     data = data + struct.pack("<I", self.crc32(data))   File "C:\temp\rec\libipoddfu.py", line 190, in crc32     crc = (crc >> 8) ^ crc_table[(crc ^ data[i]) & 0xff];
[22:08:13] <TheSeven> try using python 3 or changing that line to crc = (crc >> 8) ^ crc_table[(crc ^ ord(data[i])) & 0xff];
[22:08:25] <zxcasd> ok 1s
[22:10:41] <zxcasd> Changed file. Outstanding - got the emcore loader now. Thanks so much!
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[23:32:37] <zxcasd> Hi again. Sorry to be a pain; I've been enjoyably playing with this for the past hour but have hit a wall. I can reliably get into DFU and then into emcore recovery mode, but when I attempt to upload the installer (859) .ubi, it errors with:
[23:32:40] <zxcasd> Uploading installer-ipodnano2g-r859-20120102.ubi to 0x 8000000...Traceback
[23:32:46] <zxcasd> ...
[23:32:49] <zxcasd>     raise USBError(errmsg, ret)
[23:32:52] <zxcasd> usb.core.USBError: [Errno None] usb_reap: timeout error
[23:32:56] <zxcasd> Exception usb.core.USBError: USBError(None, 'usb_release_interface: could not release interface 0, win error: The device does not recognize the command.\r\n') in <bound method Device.__del__ of <usb.core.Device object at 0x00000000023FA5F8>> ignored
[23:33:31] <zxcasd> I saw a support log with an alternate line referencing 0x09000000 but that threw similar error
[23:33:59] <TheSeven> so you're saying that if you attempt to normally boot the ipod it ends up in dfu mode?
[23:34:03] <zxcasd> Correct
[23:34:10] <zxcasd> If I reset it from recovery, back to dfu
[23:34:37] <zxcasd> Then must reinstall recovery to attempt above again (the above can only be tried once)
[23:34:38] <TheSeven> and you didn't update its firmware or anything before that happened? kinda odd
[23:34:43] <zxcasd> Correct
[23:34:54] <zxcasd> Been stuck right here since I got into the recovery screen when last I left.
[23:35:17] <TheSeven> it's kinda illogical that something would corrupt the flash in that situation
[23:35:28] <zxcasd> Boggle - I'm just a dilettante. :)
[23:35:41] <TheSeven> so there might be something else that is preventing it from booting...
[23:36:36] <zxcasd> Not sure if you saw my last notes an hour ago... I was using with Alpine car interface and occasional bad usb cable, not sure if it got zapped badly somehow..
[23:37:27] <zxcasd> This is all just fun for me now; I've already written the little beast off. It's served me well. But any ideas are certainly welcome; this seemed to be the limit of what I was able to google.
[23:38:29] <TheSeven> it's a fairly interesting story... I can't really think of a reason why it would do this
[23:38:46] <zxcasd> Well, I've been IT for 26 years... leave it to me.
[23:38:51] <zxcasd> ...to break something in a new way.
[23:39:05] <TheSeven> so you're saying that the upload of the installer times out?
[23:39:44] <zxcasd> That's the exact error above.. after running, it pauses about 3s then throws the error. Recovery mode is showing on the ipod.
[23:39:50] <TheSeven> can you pick an arbitrary file of a few kilobytes (<64KB) for some tests?
[23:40:04] <zxcasd> And again, no trouble with getting into recovery (except it doesn't stick = bounce goes DFU)
[23:40:06] <TheSeven> and check if that uploads successfully (I guess it won't)
[23:40:10] <zxcasd> Sure, 1s
[23:41:21] <TheSeven> wait a second... what exactly are you doing?
[23:41:28] <TheSeven> what's the full command you're using to upload this?
[23:41:37] <zxcasd> going back through DFU/recovery... :) Was going to ask: what's the command line I should use?
[23:41:49] <TheSeven> python emcoreldr.py run installer-*.ubi?
[23:41:58] <TheSeven> is that what you're doing?
[23:42:46] <TheSeven> can you attempt this: python download 0x24000000 0x00100000 bootflash.bin
[23:43:02] <TheSeven> that might provide some more insight on why this thing fails to boot
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[23:45:05] <zxcasd_> Whoops, sorry, dropped for a sec. Used that command line and also, per a support log, C:\temp>python emcoreldr.py upload 0x9000000 installer-ipodnano2g-r859-20120102. ubi && emcoreldr.py execute 0x09000000
[23:45:08] <zxcasd_> both with same results.
[23:45:14] <zxcasd_> Back in recovery mode now
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[23:46:20] <zxcasd_> Is the latter correct syntax for an arbitrary file?
[23:48:27] <TheSeven> does it already fail during the upload?
[23:48:53] <zxcasd_> The timeout error comes when I try to upload, yes. Haven't tried an arbitrary file yet.
[23:49:18] <TheSeven> and can you try this: python emcoreldr.py download 0x24000000 0x00100000 bootflash.bin
[23:49:43] <zxcasd_> error, 1s
[23:49:53] <TheSeven> if that works, the flash contents might provide some insight into why it fails to boot in the first place
[23:49:57] <zxcasd_> usb.core.USBError: [Errno None] usb_reap: timeout error Exception usb.core.USBError: USBError(None, 'usb_release_interface: could not re lease interface 0, win error: The device does not recognize the command.\r\n') i n <bound method Device.__del__ of <usb.core.Device object at 0x00000000024875F8> > ignored
[23:50:36] <zxcasd_> nope, looks like same failure
[23:50:54] <zxcasd_> Starts with Downloading 0x100000 bytes from 0x24000000 to bootflash.bin...Traceback (most re cent call last):
[23:50:58] <zxcasd_> Waits 3s, then fails
[23:51:02] <TheSeven> does the ipod hang after that command? i.e. not enumerate again after reconnecting it without rebooting?
[23:51:09] <zxcasd_> Correct
[23:51:14] <zxcasd_> And reboot goes to DFU
[23:51:44] <TheSeven> ok, can you try download 0x20000000 0x1000 test.bin? does that hang as well?
[23:51:56] <zxcasd_> checking
[23:53:41] <zxcasd_> Same behavior. Starts, pauses a couple seconds, fails with the timeout.
[23:53:59] <TheSeven> hm...
[23:54:10] <TheSeven> so it isn't that it can't access a particular address
[23:54:18] <TheSeven> but rather some general communication problem
[23:54:43] <TheSeven> which emcoreldr version are you using?
[23:55:19] <zxcasd_> Grabbed the latest IIRC, one sec
[23:55:35] <zxcasd_> too many windows open, searching
[23:55:36] <TheSeven> I'd like to try reproducing this behavior on my device
[23:55:55] <zxcasd_> brb switching to mirc, this web client is killing me.
[23:58:04] <TheSeven> I guess you grabbed http://files.freemyipod.org/tmp/emcoreldr-ipodnano2g.dfu?
[23:58:15] * TheSeven wonders what that even is...