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[Q] It doesn't make sense installing custom kernel via flash tool

9 posts
Thanks Meter: 1
By skyros021, Junior Member on 17th April 2014, 05:38 PM
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Sorry for this noob question.. I'm trying to flash a custom kernel in my arc s and it fails,It says "The device must be rooted" even tough my device is rooted here's the flash tool log.

18/012/2014 00:12:19 - INFO - Device connected with USB debugging on
18/012/2014 00:12:19 - INFO - Connected device : SonyEricson Xperia Arc S
18/012/2014 00:12:19 - INFO - Installed version of busybox : BusyBox v1.21.1-Stericson (2013-07-08 15:58:11 BST) multi-call binary.
18/012/2014 00:12:19 - INFO - Android version : 4.0.4 / kernel version : / Build number : 4.1.B.1.13
18/012/2014 00:12:19 - INFO - Checking root access
18/012/2014 00:12:21 - INFO - Root Access Allowed
18/023/2014 00:23:17 - INFO - Please wait device is rebooting into fastboot mode (via ADB)
18/023/2014 00:23:24 - INFO - Device will soon enter fastboot mode
18/023/2014 00:23:25 - INFO - Device disconnected
18/023/2014 00:23:27 - INFO - Device connected in fastboot mode
18/023/2014 00:23:55 - INFO - Please wait device is rebooting into fastboot mode (via Fastboot)
18/023/2014 00:23:55 - INFO - Device will soon reboot back into fastboot mode
18/023/2014 00:23:55 - INFO - Device disconnected
18/023/2014 00:23:57 - INFO - Device connected in fastboot mode
18/024/2014 00:24:11 - INFO - Selected kernel (boot.img or kernel.sin): C:\Users\Computer\Desktop\smart phone management\LuPuS_anzu_Stock-gB+iCsv16-full(4).img
18/024/2014 00:24:11 - INFO - Flashing selected kernel
18/024/2014 00:24:11 - INFO - sending 'boot' (7296 KB)...
18/024/2014 00:24:11 - INFO - FAILED (remote: The Device must be rooted first)
18/024/2014 00:24:11 - INFO - finished. total time: 0.001s
18/024/2014 00:24:11 - INFO - FASTBOOT Output:
sending 'boot' (7296 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.001s

Please help me guys I'm a total newbie,Thanks!
BTW I'm using Honami ROM Superlative edition I'm trying to install LUPUS V16
Last edited by skyros021; 17th April 2014 at 06:02 PM. Reason: lack of info
17th April 2014, 07:26 PM |#2  
Thanks Meter: 13
Is your device unlocked?
I mean, you NEED the bootloader to be unlock to flash a custom kernel. It's a different thing from root.
There is a tutorial in the sony website:

Or, there is an option (i guess in the flastool thread) for testing if you had (or not) the bootloader unlock
The Following User Says Thank You to 17th_angel For This Useful Post: [ View ]
18th April 2014, 04:56 AM |#3  
OP Junior Member
Thanks Meter: 1
yes sir my bootloader is unlocked.Thanks for your reply
23rd April 2014, 08:53 AM |#4  
Thanks Meter: 27
Try to use QuickIMG to flash kernel bro.
29th April 2014, 03:47 PM |#5  
Junior Member
Thanks Meter: 0
type *#*#7378423#*#* in your phone
Service Info -> Configuration
is there
Bootloader unlocked: Yes
then your bootloader is open
23rd May 2014, 03:28 AM |#6  
OP Junior Member
Thanks Meter: 1
thanks guys my bootloader is unlocked.. thanks for your help! but i noticed a problem my standby battery drains super fast in 7hr stand by I loose 45% of my battery I tried so many roms and the results are the same. I guess the phone is old.. anyway thanks your help guys
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