[Xperia Arc Android Development] tRippinthehead:
I have the same problem.

@jerpelea:

here is part of the contents of the log file:

Script Asserts: Enabled

-- Installing: /sdcard/update_arc_007d.zip
Finding update package...
I:Update location: /sdcard/update_arc_007d.zip
Opening update package...
Installing update...
mtd mount of system failed: Device or resource busy
symlink: failed to symlink /system/bin/cat to toolbox: No such file or directory
symlink: failed to symlink /system/bin/cmp to toolbox: No such file or directory
symlink: failed to symlink /system/bin/date to toolbox: No such file or directory
symlink: failed to symlink /system/bin/dd to toolbox: No such file or directory
symlink: failed to symlink /system/bin/dmesg to toolbox: No such file or directory
symlink: failed to symlink /system/bin/getevent to toolbox: No such file or directory
symlink: failed to symlink /system/bin/getprop to toolbox: No such file or directory
symlink: failed to symlink /system/bin/hd to toolbox: No such file or directory
symlink: failed to symlink /system/bin/id to toolbox: No such file or directory
symlink: failed to symlink /system/bin/ifconfig to toolbox: No such file or directory
symlink: failed to symlink /system/bin/iftop to toolbox: No such file or directory
symlink: failed to symlink /system/bin/insmod to toolbox: No such file or directory
symlink: failed to symlink /system/bin/ioctl to toolbox: No such file or directory
symlink: failed to symlink /system/bin/ionice to toolbox: No such file or directory
symlink: failed to symlink /system/bin/kill to toolbox: No such file or directory
symlink: failed to symlink /system/bin/log to toolbox: No such file or directory
symlink: failed to symlink /system/bin/lsmod to toolbox: No such file or directory
symlink: failed to symlink /system/bin/nandread to toolbox: No such file or directory
symlink: failed to symlink /system/bin/netstat to toolbox: No such file or directory
symlink: failed to symlink /system/bin/newfs_msdos to toolbox: No such file or directory
symlink: failed to symlink /system/bin/notify to toolbox: No such file or directory
symlink: failed to symlink /system/bin/printenv to toolbox: No such file or directory
symlink: failed to symlink /system/bin/ps to toolbox: No such file or directory
symlink: failed to symlink /system/bin/reboot to toolbox: No such file or directory
symlink: failed to symlink /system/bin/renice to toolbox: No such file or directory
symlink: failed to symlink /system/bin/rmdir to toolbox: No such file or directory
symlink: failed to symlink /system/bin/rmmod to toolbox: No such file or directory
symlink: failed to symlink /system/bin/route to toolbox: No such file or directory
symlink: failed to symlink /system/bin/schedtop to toolbox: No such file or directory
symlink: failed to symlink /system/bin/sendevent to toolbox: No such file or directory
symlink: failed to symlink /system/bin/setconsole to toolbox: No such file or directory
symlink: failed to symlink /system/bin/setprop to toolbox: No such file or directory
symlink: failed to symlink /system/bin/sleep to toolbox: No such file or directory
symlink: failed to symlink /system/bin/smd to toolbox: No such file or directory
symlink: failed to symlink /system/bin/start to toolbox: No such file or directory
symlink: failed to symlink /system/bin/stop to toolbox: No such file or directory
symlink: failed to symlink /system/bin/sync to toolbox: No such file or directory
symlink: failed to symlink /system/bin/top to toolbox: No such file or directory
symlink: failed to symlink /system/bin/uptime to toolbox: No such file or directory
symlink: failed to symlink /system/bin/vmstat to toolbox: No such file or directory
symlink: failed to symlink /system/bin/watchprops to toolbox: No such file or directory
symlink: failed to symlink /system/bin/wipe to toolbox: No such file or directory
symlink: failed to symlink /system/xbin/arp to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ash to busybox: No such file or directory
symlink: failed to symlink /system/xbin/awk to busybox: No such file or directory
symlink: failed to symlink /system/xbin/basename to busybox: No such file or directory
symlink: failed to symlink /system/xbin/bbconfig to busybox: No such file or directory
symlink: failed to symlink /system/xbin/brctl to busybox: No such file or directory
symlink: failed to symlink /system/xbin/bunzip2 to busybox: No such file or directory
symlink: failed to symlink /system/xbin/bzcat to busybox: No such file or directory
symlink: failed to symlink /system/xbin/bzip2 to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cal to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cat to busybox: No such file or directory
symlink: failed to symlink /system/xbin/catv to busybox: No such file or directory
symlink: failed to symlink /system/xbin/chgrp to busybox: No such file or directory
symlink: failed to symlink /system/xbin/chmod to busybox: No such file or directory
symlink: failed to symlink /system/xbin/chown to busybox: No such file or directory
symlink: failed to symlink /system/xbin/chroot to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cksum to busybox: No such file or directory
symlink: failed to symlink /system/xbin/clear to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cmp to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cp to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cpio to busybox: No such file or directory
symlink: failed to symlink /system/xbin/cut to busybox: No such file or directory
symlink: failed to symlink /system/xbin/date to busybox: No such file or directory
symlink: failed to symlink /system/xbin/dc to busybox: No such file or directory
symlink: failed to symlink /system/xbin/dd to busybox: No such file or directory
symlink: failed to symlink /system/xbin/depmod to busybox: No such file or directory
symlink: failed to symlink /system/xbin/devmem to busybox: No such file or directory
symlink: failed to symlink /system/xbin/df to busybox: No such file or directory
symlink: failed to symlink /system/xbin/diff to busybox: No such file or directory
symlink: failed to symlink /system/xbin/dirname to busybox: No such file or directory
symlink: failed to symlink /system/xbin/dmesg to busybox: No such file or directory
symlink: failed to symlink /system/xbin/dnsd to busybox: No such file or directory
symlink: failed to symlink /system/xbin/dos2unix to busybox: No such file or directory
symlink: failed to symlink /system/xbin/du to busybox: No such file or directory
symlink: failed to symlink /system/xbin/echo to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ed to busybox: No such file or directory
symlink: failed to symlink /system/xbin/egrep to busybox: No such file or directory
symlink: failed to symlink /system/xbin/env to busybox: No such file or directory
symlink: failed to symlink /system/xbin/expr to busybox: No such file or directory
symlink: failed to symlink /system/xbin/false to busybox: No such file or directory
symlink: failed to symlink /system/xbin/fdisk to busybox: No such file or directory
symlink: failed to symlink /system/xbin/fgrep to busybox: No such file or directory
symlink: failed to symlink /system/xbin/find to busybox: No such file or directory
symlink: failed to symlink /system/xbin/fold to busybox: No such file or directory
symlink: failed to symlink /system/xbin/free to busybox: No such file or directory
symlink: failed to symlink /system/xbin/freeramdisk to busybox: No such file or directory
symlink: failed to symlink /system/xbin/fuser to busybox: No such file or directory
symlink: failed to symlink /system/xbin/getopt to busybox: No such file or directory
symlink: failed to symlink /system/xbin/grep to busybox: No such file or directory
symlink: failed to symlink /system/xbin/gunzip to busybox: No such file or directory
symlink: failed to symlink /system/xbin/gzip to busybox: No such file or directory
symlink: failed to symlink /system/xbin/head to busybox: No such file or directory
symlink: failed to symlink /system/xbin/hexdump to busybox: No such file or directory
symlink: failed to symlink /system/xbin/id to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ifconfig to busybox: No such file or directory
symlink: failed to symlink /system/xbin/insmod to busybox: No such file or directory
symlink: failed to symlink /system/xbin/install to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ip to busybox: No such file or directory
symlink: failed to symlink /system/xbin/kill to busybox: No such file or directory
symlink: failed to symlink /system/xbin/killall to busybox: No such file or directory
symlink: failed to symlink /system/xbin/killall5 to busybox: No such file or directory
symlink: failed to symlink /system/xbin/length to busybox: No such file or directory
symlink: failed to symlink /system/xbin/less to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ln to busybox: No such file or directory
symlink: failed to symlink /system/xbin/losetup to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ls to busybox: No such file or directory
symlink: failed to symlink /system/xbin/lsmod to busybox: No such file or directory
symlink: failed to symlink /system/xbin/lspci to busybox: No such file or directory
symlink: failed to symlink /system/xbin/lsusb to busybox: No such file or directory
symlink: failed to symlink /system/xbin/lzop to busybox: No such file or directory
symlink: failed to symlink /system/xbin/lzopcat to busybox: No such file or directory
symlink: failed to symlink /system/xbin/md5sum to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mkdir to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mke2fs to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mkfifo to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mkfs.ext2 to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mknod to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mkswap to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mktemp to busybox: No such file or directory
symlink: failed to symlink /system/xbin/modprobe to busybox: No such file or directory
symlink: failed to symlink /system/xbin/more to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mount to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mountpoint to busybox: No such file or directory
symlink: failed to symlink /system/xbin/mv to busybox: No such file or directory
symlink: failed to symlink /system/xbin/netstat to busybox: No such file or directory
symlink: failed to symlink /system/xbin/nice to busybox: No such file or directory
symlink: failed to symlink /system/xbin/nohup to busybox: No such file or directory
symlink: failed to symlink /system/xbin/nslookup to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ntpd to busybox: No such file or directory
symlink: failed to symlink /system/xbin/od to busybox: No such file or directory
symlink: failed to symlink /system/xbin/patch to busybox: No such file or directory
symlink: failed to symlink /system/xbin/pgrep to busybox: No such file or directory
symlink: failed to symlink /system/xbin/pidof to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ping to busybox: No such file or directory
symlink: failed to symlink /system/xbin/pkill to busybox: No such file or directory
symlink: failed to symlink /system/xbin/printenv to busybox: No such file or directory
symlink: failed to symlink /system/xbin/printf to busybox: No such file or directory
symlink: failed to symlink /system/xbin/ps to busybox: No such file or directory
symlink: failed to symlink /system/xbin/pwd to busybox: No such file or directory
symlink: failed to symlink /system/xbin/rdev to busybox: No such file or directory
symlink: failed to symlink /system/xbin/readlink to busybox: No such file or directory
symlink: failed to symlink /system/xbin/realpath to busybox: No such file or directory
symlink: failed to symlink /system/xbin/renice to busybox: No such file or directory
symlink: failed to symlink /system/xbin/reset to busybox: No such file or directory
symlink: failed to symlink /system/xbin/rm to busybox: No such file or directory
symlink: failed to symlink /system/xbin/rmdir to busybox: No such file or directory
symlink: failed to symlink /system/xbin/rmmod to busybox: No such file or directory
symlink: failed to symlink /system/xbin/route to busybox: No such file or directory
symlink: failed to symlink /system/xbin/run-parts to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sed to busybox: No such file or directory
symlink: failed to symlink /system/xbin/seq to busybox: No such file or directory
symlink: failed to symlink /system/xbin/setsid to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sh to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sha1sum to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sha256sum to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sha512sum to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sleep to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sort to busybox: No such file or directory
symlink: failed to symlink /system/xbin/split to busybox: No such file or directory
symlink: failed to symlink /system/xbin/stat to busybox: No such file or directory
symlink: failed to symlink /system/xbin/strings to busybox: No such file or directory
symlink: failed to symlink /system/xbin/stty to busybox: No such file or directory
symlink: failed to symlink /system/xbin/swapoff to busybox: No such file or directory
symlink: failed to symlink /system/xbin/swapon to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sync to busybox: No such file or directory
symlink: failed to symlink /system/xbin/sysctl to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tac to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tail to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tar to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tee to busybox: No such file or directory
symlink: failed to symlink /system/xbin/telnet to busybox: No such file or directory
symlink: failed to symlink /system/xbin/test to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tftp to busybox: No such file or directory
symlink: failed to symlink /system/xbin/time to busybox: No such file or directory
symlink: failed to symlink /system/xbin/top to busybox: No such file or directory
symlink: failed to symlink /system/xbin/touch to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tr to busybox: No such file or directory
symlink: failed to symlink /system/xbin/traceroute to busybox: No such file or directory
symlink: failed to symlink /system/xbin/true to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tty to busybox: No such file or directory
symlink: failed to symlink /system/xbin/tune2fs to busybox: No such file or directory
symlink: failed to symlink /system/xbin/umount to busybox: No such file or directory
symlink: failed to symlink /system/xbin/uname to busybox: No such file or directory
symlink: failed to symlink /system/xbin/uniq to busybox: No such file or directory
symlink: failed to symlink /system/xbin/unix2dos to busybox: No such file or directory
symlink: failed to symlink /system/xbin/unlzop to busybox: No such file or directory
symlink: failed to symlink /system/xbin/unzip to busybox: No such file or directory
symlink: failed to symlink /system/xbin/uptime to busybox: No such file or directory
symlink: failed to symlink /system/xbin/usleep to busybox: No such file or directory
symlink: failed to symlink /system/xbin/uudecode to busybox: No such file or directory
symlink: failed to symlink /system/xbin/uuencode to busybox: No such file or directory
symlink: failed to symlink /system/xbin/vi to busybox: No such file or directory
symlink: failed to symlink /system/xbin/watch to busybox: No such file or directory
symlink: failed to symlink /system/xbin/wc to busybox: No such file or directory
symlink: failed to symlink /system/xbin/wget to busybox: No such file or directory
symlink: failed to symlink /system/xbin/which to busybox: No such file or directory
symlink: failed to symlink /system/xbin/whoami to busybox: No such file or directory
symlink: failed to symlink /system/xbin/xargs to busybox: No such file or directory
symlink: failed to symlink /system/xbin/yes to busybox: No such file or directory
symlink: failed to symlink /system/xbin/zcat to busybox: No such file or directory
symlink: failed to symlink /system/xbin/[ to busybox: No such file or directory
symlink: failed to symlink /system/xbin/[[ to busybox: No such file or directory
set_perm: chown of /system/bin/netcfg to 0 3003 failed: No such file or directory
set_perm: chmod of /system/bin/netcfg to 2750 failed: No such file or directory
set_perm: chown of /system/bin/ping to 0 3004 failed: No such file or directory
set_perm: chmod of /system/bin/ping to 2755 failed: No such file or directory
set_perm: chown of /system/bin/run-as to 0 2000 failed: No such file or directory
set_perm: chmod of /system/bin/run-as to 6750 failed: No such file or directory
set_perm: chown of /system/etc/bluetooth to 0 0 failed: No such file or directory
set_perm: chmod of /system/etc/bluetooth to 755 failed: No such file or directory
set_perm: chown of /system/etc/bluetooth/auto_pairing.conf to 1000 1000 failed: No such file or directory
set_perm: chmod of /system/etc/bluetooth/auto_pairing.conf to 640 failed: No such file or directory
set_perm: chown of /system/etc/bluetooth/blacklist.conf to 3002 3002 failed: No such file or directory
set_perm: chmod of /system/etc/bluetooth/blacklist.conf to 444 failed: No such file or directory
set_perm: chown of /system/etc/dbus.conf to 1002 1002 failed: No such file or directory
set_perm: chmod of /system/etc/dbus.conf to 440 failed: No such file or directory
set_perm: chown of /system/etc/dhcpcd/dhcpcd-run-hooks to 1014 2000 failed: No such file or directory
set_perm: chmod of /system/etc/dhcpcd/dhcpcd-run-hooks to 550 failed: No such file or directory
set_perm: chown of /system/etc/init.goldfish.sh to 0 2000 failed: No such file or directory
set_perm: chmod of /system/etc/init.goldfish.sh to 550 failed: No such file or directory
set_perm: chown of /system/bin/bash to 0 0 failed: No such file or directory
set_perm: chmod of /system/bin/bash to 4755 failed: No such file or directory
symlink: failed to symlink /system/bin/sh to /system/bin/bash: No such file or directory
set_perm: chown of /system/bin/nano to 0 0 failed: No such file or directory
set_perm: chmod of /system/bin/nano to 4755 failed: No such file or directory
set_perm: chown of /system/bin/su to 0 0 failed: No such file or directory
set_perm: chmod of /system/bin/su to 4777 failed: No such file or directory
script result was [/system]
Failed to mount /dev/block/mtdblock0 on /system: Device or resource busy
minzip: Can't create containing directory for "/system/app/ADWLauncher.apk": Read-only file system

Install from sdcard complete.

It seems that nothing has been installed. No wonder that show a blank screen. %)

Installing the update_arc_007d.zip is just a fraction of a second.