[Captivate Android Development] AdamOutler:
I got fastboot running and was able to detect. I got to the point where I try to unlock the bootloaders, but it tries to do a format and says it's not complete at the point of "FAT Format ....."

adam@Adam-Desktop:~$ fastboot devices
30325181F24700EC	fastboot
adam@Adam-Desktop:~/Desktop/nexus firmware$ fastboot boot boot.img downloading 'boot.img'... OKAY
booting... FAILED (remote: Bootloader Locked - Use "fastboot oem unlock" to Unlock)
adam@Adam-Desktop:~/Desktop/nexus firmware$ fastboot oem unlock
...

Here is the UART output. I was not able to track where the "error found: 10" is coming from.

��������������������������������������������������������������������������������
Uart negotiation Error

-------------------------------------------------------------
Hummingbird Interceptor Boot Loader (HIBL) v1.0
Copyright (C) Rebellos 2011
-------------------------------------------------------------

Calling IBL Stage2 ...OK
Testing DRAM1 ...OK
iRAM reinit ...OK
cleaning OTG context ...OK
Chain of Trust has been successfully compromised.

Begin unsecure download now...
0x00000000BL3 EP: 0x33040000
Download complete, hold download mode key combination.

Starting BL3 in...

Set cpu clk. from 400MHz to 800MHz.
IROM e-fused - Secure Boot Version.

-----------------------------------------------------------
Samsung Secondary Bootloader (SBL) v3.0
Copyright (C) Samsung Electronics Co., Ltd. 2006-2010

Board Name: HERRING REV 03 (JTAG)
Build On: Jan 20 2011 17:19:41
-----------------------------------------------------------

MMC MAG8DE 15264 MB
Re_partition: magic code(0xffffffff)
Muxed OneNAND 512MB (0x50) Sync
Scanning Bad Block .......
Bad Block 2047 (0)
GUID Partition Table Create!
Partitions loading success
Read image(PARAM) from flash .......
Done
init_fuel_gauge: vcell = 4142mV, soc = 86
PMIC_IRQ1 = 0x28
PMIC_IRQ2 = 0x0
PMIC_IRQ3 = 0x0
PMIC_IRQ4 = 0x0
PMIC_STATUS1 = 0x40
PMIC_STATUS2 = 0x2c
PMIC_STATUS3 = 0xff
PMIC_STATUS4 = 0xff
PMIC_STATUS5 = 0xff
PMIC_SMPL = 0x80
Key scan = 0x0
Check Power Key ... Skip!
message.command = ��������������
message.status = �������������������������������
message.recovery = ���������
BOOT_MODE_NORMAL (HW_RST(0x00000001), INFORM(0x00000000))
Done
Erase Image (USERDATA) from movinand ......
[MMC] ERASE from 1050624 to 3147775
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00

chopped for brevity

[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000900
Done
Erase Image (MEDIA) from movinand ......
[MMC] Group End Address Warning!
[MMC] Address Not Aligned! (1024 blocks)
[MMC] ERASE from 3147776 to 31260638
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00

Chopped for brevity

[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
[MMC] RESPONSE 0x00000e00
Done
Erase Image (MISC) from flash ......
Done
Erase Image (CACHE) from flash ......
Done
FAT Format ......

Command is NOT completed3
error found: 10