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If your r0ket isn't working try the following steps in this order:
Please note: our market research has told us people buy stuff with closed crypto keys and vendor approved applications like crazy, theref0re the r0ket is compatible with this audience. The original firmware contains some crypto keys to make this possible, so if you flash your own firmware you will lose those forever. We don't want to stop you from doing so (you'll loose only the stuff which needs the closed krypto keys), just wanted to tell you before you start flashing. Possibly you want to live on the Bluemchenwiese for a day or so before jailbreaking your badge…
Please also note: Camp hasn't even started yet and we are putting more stuff together on flashing etc. Some of us aren't even at Camp yet. Probably just start with the simulat0r if you want to write your own Tetris NOW.
Pushing joystick up while powering on erases the firstboot config. There is no risk in doing that except having to type in your nick again…
It SEEMS some badges have a wrongly formated DF. The DF is the 512K Chip storing the filesystem containing fonts, l0dables, config etc.
A corrupted FS can result in the badge displaying some error on firstboot about unavailable functions. You can attach the badge to a PC (linux preferred) and start the USB Storage in the menu, a 512K FAT filesystem with >30 files should appear. If that somehow looks crazy it MIGHT be you have a corrupted fs.
An image of a working FS is available at http://y.nu/r0ket-df.dd Download that, boot your r0ket while pushing the joystick DOWN (not in and NOT LEFT) to start as mass storage, wait for the 512K device to appear, unmount it if your automounter mounted it an then
dd if=r0ket-df.dd of=/dev/sdX
with sdX being the new found device. Be sure not to overwrite your Harddrive - a small typo here could ruin all your PCs data…
For fixing your r0ket with your old or a friends backup see Backup usb_storage.
Two possibilities: a) your filesystem is corrupt (see above) b) your OS created the files with lower-case extensions (all extensions on the filesystem are always in uppercase). To fix this:
cd /media/… rm *.c0d *.nik *.int cd …/release/files rename s/c0d/C0D/ *.c0d rename s/nik/NIK/ *.nik rename s/int/INT/ *.int cp *.c0d *.nik *.int /media/… sync
Careful, display connectors are fragile.
Find someone who has a working display, try that. But: so far we haven't encountered a broken display. Your problem might be something else.
Yes, that's expected. When you flashed the new firmware, you implicitly jailbroke the device and moved on from Bluemchenwiese to Hackerspace… That means you lost the original secret keys forever (unless you manage to extract them from another device, of course) and the old l0dable files are encrypted with those old keys - so you can't install them anymore. You have to install new l0dable files that are encrypted with the new keys (probably those which you downloaded from git and renamed to SECRET.release, see http://r0ket.badge.events.ccc.de/build ).