[Bada Software and Hacking General] adfree:
UART output of HIBL unbrick...

[BOOT_V1.0 (May 28 2010, 21:22:23)]
SelectBootingMode: H/W...0xe.
[B][SYSCON][Err] SysCon_Drv_Get_FOUTAPLL() - No Matched PLL, reg_value: 0x80C80601
[SYSCON][Err] SysCon_Drv_Get_FOUTAPLL() - No Matched PLL, reg_value: 0x80C80601
[SYSCON][Err] SysCon_Drv_Get_FOUTAPLL() - No Matched PLL, reg_value: 0x80C80601
[SYSCON][Err] SysCon_Drv_Get_FOUTAPLL() - No Matched PLL, reg_value: 0x80C80601 [/B]
[BOOT] ARMCLK: 0 KHz, MSYSHCLK 0 KHz,MSYSPCLK: 0 KHz, [BOOT] DSYSHCLK 166750 KHz,DSYSPCLK: 83375 KHz,PSYSHCLK: 133400 KHz, PSYSPCLK: 66700 KHz,SYSCON_A2M: 0 KHz
+++FIMD_Drv_INITIALIZE
FIMD_Drv_ChangeMode: MDNIE_MODE
Frame Rate:62	SCLK_FIMD:133400 kHz	ClkDiv:4
S6E63M0 : LDI_Pentile_Set_Change Pentile_Value =6c
---FIMD_Drv_INITIALIZE
---FIMD_Drv_SetWinOnOff(WIN4:1)
LCD initialize Finished
Flash_Unlock failed
Poweron status - 0
FSA9480 0x03 Register = 0
FSA9480 0x0A Register = 4
FSA9480 0x0B Register = 0
FSA9480 0x07 Register = 1f
USB charging enble
SelectBootingMode: Boot Mode = 2...
charging disable
Display_LSI_Boot : disp_Main_Clean
Display_LSI_Boot : disp_Main_Clean_All
Display_LSI_Boot : disp_Main_Dload_Update
Display_LSI_Boot : disp_Main_Dload_Message
Display_LSI_Boot : disp_Main_Dload_Update
Display_LSI_Boot : disp_Main_Dload_Message
Display_LSI_Boot : disp_Main_Dload_Update
Display_LSI_Boot : disp_Main_Dload_Message
Display_LSI_Boot : disp_dimming_backlight
Display_LSI_Boot : disp_Dload_Init

AST_DOWNLOAD

-----------------------------------------------------
USB BOOT Downloader for s5pc100
Copyright (c) 2005 by SAMSUNG Electronic, Inc.
V1.0 (May 28 2010, 21:22:24)
-----------------------------------------------------

Will post output of same BOOT woking from JTAG...

Need few minutes...

Edit 1.

Seems identical... so UART shows not why or where problem is... in S8500... :o

Only as info... unbrick.bat

Set cpu clk. from 400MHz to 800MHz.
OM=0x9, device=OnenandMux(Audi)
IROM e-fused - Non Secure Boot Version.

-----------------------------------------------------------
Samsung Secondary Bootloader (SBL) v3.0
Copyright (C) Samsung Electronics Co., [B]Modified by Rebell[/B]
Build On: Jun 8 2011 21:44:47
-----------------------------------------------------------

Re_partition: magic code(0x0)
[PAM: ] ++FSR_PAM_Init
[PAM: ] OneNAND physical base address : 0xb0000000
[PAM: ] OneNAND virtual base address : 0xb0000000
[PAM: ] OneNAND nMID=0xec : nDID=0x50
[PAM: ] --FSR_PAM_Init
fsr_bml open error
error return value 90330000
Device not opened
FlashDevOpen 232: Error(nErr=0x90330000)
j4fs_open 136: Error(nErr=0x40000000)
loke_init: j4fs_open failed..
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
init_fuel_gauge: vcell = 0mV, soc = 0
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
EXT_I2C(3) -> No ACK
init_fuel_gauge: vcell = 0mV, soc = 0, rcomp = 0
FlashDevRead 63: Error(offset,length,j4fs_end,nErr)=(0x40000,0x1000,0x83ccf8df,0x80040001)
nps status file does not exist..
nps status is incorrect!! set default status.(completed)
nps status=0x504d4f43
PMIC_IRQ1 = 0x0
PMIC_IRQ2 = 0x0
PMIC_IRQ3 = 0x0
PMIC_IRQ4 = 0x0
PMIC_STATUS1 = 0x40
PMIC_STATUS2 = 0x2c
get_debug_level current debug level is 0x0.
get_debug_level current debug level is 0x0.
get_debug_level current debug level is 0x0.
aries_process_platform: Debug Level Invalid
keypad_scan: key value ----------------->= 0x0
CONFIG_ARIES_REV:48 , CONFIG_ARIES_REV03:48
FlashDevRead 63: Error(offset,length,j4fs_end,nErr)=(0x40000,0x1000,0x83ccf8df,0x80040001)
nps status file does not exist..
nps status is incorrect!! set default status.(completed)
nps status=0x504d4f43

==> Welcome to ARIES!
==> Entering usb download mode..
DISPLAY_PATH_SEL[MDNIE 0x1]is on
MDNIE setting Init start!!
vsync interrupt is off
video interrupt is off
[fb0] turn on
MDNIE setting Init end!!
Error : Current Mode is Host
EP2: 0, 2, 0; len=7
EP2: 0, 2, 0; len=7
sug: IN EP asserted
sug: IN EP asserted

So I need other way to identify why...

Warring : Security fail!!

Best Regards

Edit 2.

Ah... seems more UPCH related... my fault...

http://xdaforums.com/showpost.php?p=48855178&postcount=7