PS3 CFW 3.55 kmeaw upgrade to Rebug scare experience! brick?!

I thought my PS3 game console was bricked after PS3UPDAT.PUP from 3.55 kmeaw to REBUG 4.30.2 REX. The brick symptom is when pressed power button, it will power on for 5 second then turn off right away.
Q: Tried out recovery mode method, but unable to get to the mode! Panic panic panic, brick?
A: No, it is able to get into recovery mode after swapped HDD from 320GB to 500GB. (Good news!!!)
Luckily, I did backup by using PS3 backup utility before doing software upgrade.
   Make sure you have the REBUG 4.30.2's PS3UPDAT.PUP on FAT32 thumbdrive root \PS3\UPDATE\ folder for the PS3 System Update/Recovery/HDD upgrade procedure.
   The PS3 restore is working on REBUG latest version 4.81.2, but trophy since I didn't sync it.
My PS3UPDAT.PUP upgrade route: 3.55 kmeaw > REBUG 4.30.2 REX > REBUG 4.46.1 REX >  REBUG 4.78.2 REX >  REBUG 4.81.2 REX.
(Not sure if you can upgrade it from 4.30.2 to last version(4.81.2) right away?)

Note:
====
FTP by using REBUG ToolBox is better than using it from Multiman.
Please use AOMei partition tool to convert FAT32 to NTFS for the backup HDD since file sized over 4GB won't able to save on FAT32. Just FYI.

Upgrade fog from version 1.2.0 to 1.3.5

Press Ctrl-Alt-T to open Terminal
Ubuntu$cd Desktop
Ubuntu~/Desktop$wget https://sourceforge.net/projects/freeghost/files/FOG/fog_1.3.5/fog_1.3.5.tar.gz
Ubuntu~/Desktop$cd fog_1.3.5
Ubuntu~/Desktop/fog_1.3.5$tar -zxvf fog_1.3.5.tar.gz
Ubuntu~/Desktop/fog_1.3.5$cd bin
Ubuntu~/Desktop/fog_1.3.5/bin$sudo ./installfog.sh

http://localhost_ip/fog/management/
Database is invalid

Ubuntu~/Desktop/fog_1.3.5/bin$cd /var/www/html/fog/lib/fog/
Ubuntu~/var/www/html/fog/lib/fog$sudo nano config.class.php

input database password for the define ('DATABASE_password', "passsword4DB_here");

http://localhost_ip/fog/management/
Click on "update" button on the fog portal.
******************
Upgrade is completed.
******************
Error#1: PXE-E51: No DHCP or proxyDHCP offers were received after upgrade fog server.
Solution#1:
The output of your /var/log/syslog, after you attempt to start the dchp server
Look like upgrade process removed modified the DHCP server .conf on Ubuntu!!!
Have to update the /etc/dhcp/dhcpd.conf with correct IP range from subnet 0.0.0.0 to 192.168.1.0 etc.
http://askubuntu.com/questions/140126/how-do-i-install-and-configure-a-dhcp-server

sudo apt-get install isc-dhcp-server

sudo nano /etc/default/isc-dhcp-server

INTERFACES="eth1"

sudo nano /etc/dhcp/dhcpd.conf

default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.1.255;
option routers 192.168.1.254;
option domain-name-servers 192.168.1.1, 192.168.1.2;
option domain-name "mydomain.example";
next-server 192.168.1.5;

subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.10 192.168.1.100;

range 192.168.1.150 192.168.1.200;

filename "undionly.kkpxe";

} 

sudo service isc-dhcp-server restart

sudo netstat -uap

To check "eth1" INTERFACE:

sudo nano /etc/network/interfaces

Solution: https://community.spiceworks.com/topic/310393-need-some-help-with-fog

Sounds like the dhcp server isn't running properly or the tftp server.

Restart TFTP
sudo stop tftpd-hpa
sudo start tftpd-hpa

Restart DHCP
sudo /etc/init.d/isc-dhcp-server stop
sudo /etc/init.d/isc-dhcp-server stop

"Fn"-P to pause boot up screen
Error#2: /bzImage412... No such file or directory (http://ipxe.org /2d0c613b)
Could not boot: No such file or directory (http://ipxe.org /2d0c613b)
Could not boot: No such file or directory (http://ipxe.org /2d0c613b)

Solution#2:
Download the bzImages and copy it to /var/www/fog/service/ipxe/

Error#3: FATAL: kernel too old
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00
Solution#3: kernel update fixs the issue
URL: https://wiki.fogproject.org/wiki/index.php?title=Kernel_Update
The downloaded kernel is saved at /tmp/ copy it to /var/www/fog/service/ipxe/

Then try to image one of the machines.