[General Questions and Answers] froichemarv:
i was trying to root my xperia neo v and the result was this

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Easy rooting toolkit (v4.0)

created by DooMLoRD

using exploit zergRush (Revolutionary Team)

Credits go to all those involved in making this possible!

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[*] This script will:

(1) root ur device using latest zergRush exploit (21 Nov)

(2) install Busybox (1.18.4)

(3) install SU files (binary: 3.0.3 and apk: 3.0.6)

(4) some checks for free space, tmp directory

(will remove Google Maps if required)

[*] Before u begin:

(1) make sure u have installed adb drivers for ur device

(2) enable "USB DEBUGGING"

from (Menu\Settings\Applications\Development)

(3) enable "UNKNOWN SOURCES"

from (Menu\Settings\Applications)

(4) [OPTIONAL] increase screen timeout to 10 minutes

(5) connect USB cable to PHONE and then connect to PC

(6) skip "PC Companion Software" prompt on device

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CONFIRM ALL THE ABOVE THEN

Press any key to continue . . .

--- STARTING ----

--- WAITING FOR DEVICE

--- creating temporary directory

mkdir failed for tmp, File exists

--- cleaning

rm failed for *, No such file or directory

--- pushing zergRush

360 KB/s (23060 bytes in 0.062s)

--- correcting permissions

--- executing zergRush

[**] Zerg rush - Android 2.2/2.3 local root

[**] (C) 2011 Revolutionary. All rights reserved.

[**] Parts of code from Gingerbreak, (C) 2010-2011 The Android Exploid Crew.

[+] Found a GingerBread ! 0x00000118

[*] Scooting ...

[*] Sending 149 zerglings ...

[*] Sending 189 zerglings ...

[-] Hellions with BLUE flames !

--- WAITING FOR DEVICE TO RECONNECT

if it gets stuck over here for a long time then try:

disconnect usb cable and reconnect it

toggle "USB DEBUGGING" (first disable it then enable it)

--- DEVICE FOUND

--- pushing busybox

476 KB/s (1075144 bytes in 2.203s)

--- correcting permissions

--- remounting /system

mount: permission denied (are you root?)

--- checking free space on /system

27 KB/s (439 bytes in 0.015s)

df: /mnt/secure/asec: Permission denied

--- Free space on /system : 172736 bytes

--- no cleanup required

--- copying busybox to /system/xbin/

/system/xbin/busybox: cannot open for write: Read-only file system

--- correcting ownership

Unable to chmod /system/xbin/busybox: No such file or directory

--- correcting permissions

Unable to chmod /system/xbin/busybox: No such file or directory

--- installing busybox

/system/xbin/busybox: not found

--- pushing SU binary

failed to copy 'files\su' to '/system/bin/su': Read-only file system

--- correcting ownership

Unable to chmod /system/bin/su: No such file or directory

--- correcting permissions

Unable to chmod /system/bin/su: No such file or directory

--- correcting symlinks

rm failed for /system/xbin/su, Read-only file system

link failed Read-only file system

--- pushing Superuser app

failed to copy 'files\Superuser.apk' to '/system/app/./Superuser.apk': Read-only

file system

--- cleaning

--- rebooting

ALL DONE!!!

Press any key to continue . . .

can someone help me what do i lack?