So I'm trying to flash adb my android (mostly following this guide), and I'm getting stuck at the unlock device step. I can successfully unlock, but once I reboot my device it reverts to being locked. Apparently I'm unable to continue to the next step without having my device rebooted after it's unlocked.

I'm using a mac, Samsung Galaxy Nexus, and my initial problem was that my phone was (and still is) stuck in a reboot cycle.

mynames-MacBook-Air:~ myname$ cd Desktop mynames-MacBook-Air:Desktop myname$ cd adt-bundle-mac-x86_64-20140702 mynames-MacBook-Air:adt-bundle-mac-x86_64-20140702 myname$ cd sdk mynames-MacBook-Air:sdk myname$ cd platform-tools mynames-MacBook-Air:platform-tools myname$ ls NOTICE.txt etc1tool hprof-conv sqlite3 adb fastboot image-yakju-jdq39 systrace api flash-all.bat image-yakju-jdq39.zip yakju-jdq39 bootloader-maguro-primelc03.img flash-all.sh radio-maguro-i9250xxlj1.img dmtracedump flash-base.sh source.properties mynames-MacBook-Air:platform-tools myname$ ./fastboot devices 014E38590B016008 fastboot mynames-MacBook-Air:platform-tools myname$ ./fastboot oem unlock ... ERROR: usb_read failed with status e00002eb FAILED (status read failed (No such file or directory)) finished. total time: 3.819s mynames-MacBook-Air:platform-tools myname$ ./fastboot-mac flash recovery radio-maguro-i9250xxlj1.img -bash: ./fastboot-mac: No such file or directory mynames-MacBook-Air:platform-tools myname$ img -bash: img: command not found mynames-MacBook-Air:platform-tools myname$ ls NOTICE.txt etc1tool hprof-conv sqlite3 adb fastboot image-yakju-jdq39 systrace api flash-all.bat image-yakju-jdq39.zip yakju-jdq39 bootloader-maguro-primelc03.img flash-all.sh radio-maguro-i9250xxlj1.img dmtracedump flash-base.sh source.properties mynames-MacBook-Air:platform-tools myname$ ./fastboot-mac flash recovery imgradio-maguro-i9250xxlj1.img -bash: ./fastboot-mac: No such file or directory mynames-MacBook-Air:platform-tools myname$ ./fastboot devices 014E38590B016008 fastboot mynames-MacBook-Air:platform-tools myname$ ./fastboot flash recovery radio-maguro-i9250xxlj1.img < waiting for device > sending 'recovery' (12288 KB)... ERROR: usb_write failed with status e00002eb FAILED (data transfer failure (Operation timed out)) finished. total time: 0.268s mynames-MacBook-Air:platform-tools myname$ ./fastboot flash recovery recovery.img < waiting for device > sending 'recovery' (4900 KB)... OKAY [ 0.621s] writing 'recovery'... ERROR: usb_read failed with status e00002eb FAILED (status read failed (Operation timed out)) finished. total time: 0.746s mynames-MacBook-Air:platform-tools myname$ ./fastboot flash recovery boot.img sending 'recovery' (4400 KB)... OKAY [ 0.558s] writing 'recovery'... ERROR: usb_read failed with status e00002eb FAILED (status read failed (No such file or directory)) finished. total time: 0.595s mynames-MacBook-Air:platform-tools myname$ ./fastboot flash recovery bootloader-maguro-primelc03.img < waiting for device > sending 'recovery' (2308 KB)... OKAY [ 0.296s] writing 'recovery'... ERROR: usb_read failed with status e00002eb FAILED (status read failed (Operation timed out)) finished. total time: 0.390s mynames-MacBook-Air:platform-tools myname$ ./fastboot devices 014E38590B016008 fastboot mynames-MacBook-Air:platform-tools myname$