29 Jun

Galaxy S2 I9100G and CyanogenMod 9

CyanogenMod is an aftermarket firmware for a number of cell phones based on the open-source Android operating system. It offers features not found in the official Android based firmwares of vendors of these cell phones.

1. Make sure you’re running ICS bootloaders. If you already running ICS then you’ll be fine. Follow this guide to upgrade to ICS.

Step 1- running a proper working ClockworkMod-Recovery
Since i9100g not officially supported by CWM, we need to use CWM that already built into the kernel (custom kernel). Download one of this kernel (from xda):
GB –

-Boot into Download-Mode using Volume Down + Home + Power
-Start ODIN and choose “GT-I9100G_XX_ClockworkMod-Recovery_X.X.X.X.tar” as PDA (no repartition)
-Connect your Phone and start flashing
-After reboot you can easily root your device using SuperOneClick

Step 2-Flashing CyanogenMod9
Get CM9 nightly build from http://download.cyanogenmod.com/?device=i9100g. Since Google Apps were taken out from CM9 ROM, you can get it from here.

– Copy GApps and CM9 ZIPs to your internal SDCard
– Boot into Recovery
– Flash CM9 zip from internal SDCard
– Flash GApps zip from internal SDCard
– DO A DATA WIPE / FACTORY RESET (otherwise your device will be stuck at boot)
– Reboot

Useful links:
Galaxy i9100G ROM/KERNEL List
[ROM][GT-I9100G][4.0.4] CyanogenMod 9 nightly builds! [>60FPS][ROCK-SOLID]
[KERNEL][GT-I9100G][GB+ICS/LP7] ClockworkMod Recovery 5
CM9 Download Page
Google Apps

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29 Jun

Upgrading Samsung Galaxy S2 I9100G to Ice Cream Sandwich

This method is for users that were using custom ROM before ICS, by using custom ROM you’ll not be able to update to ICS over the air (using KIES).

1. Get official ICS firmware
Go to SamMobile Firmware Page and download latest ICS ROM. For Malaysia latest version is I9100GDXLP6 as the writing. Once downloaded, extract it and you’ll find I9100GDXLP6_I9100GOLBLP6_I9100GDXLP6_HOME.tar.md5 file.

2. Get ODIN
Download ODIN from here.

3. Download Mode
Start ODIN. Turn off your phone and go to Download Mode. Press and hold down Volume Down + Home + Power buttons at the same time. Odin download mode will be loaded.

4. Start flashing
In ODIN, select PDA and select I9100GDXLP6_I9100GOLBLP6_I9100GDXLP6_HOME.tar.md5 file. Do not tick anything other than this!

Remove USB cable from your phone when you see green PASS! at Odin3. That’s all and enjoys new firmware.

p/s: Do not wait too long between getting download mode and starting up ODIN.

26 Jun

Installing iperf on ubuntu

Iperf was orginally developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.

We’ll setting up 1 iperf client and 1 iperf server.
Read More

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22 Jun

Cisco Router and Unifi with dynamic ip

interface Ethernet0/0
description WAN connection to Unifi BTU
no ip address
duplex auto
speed auto

interface Ethernet0/0.500
encapsulation dot1Q 500
pppoe enable group global
pppoe-client dial-pool-number 1

interface Ethernet0/1
description LAN Segment []
ip address
ip nat inside

interface Dialer1
ip address negotiated
ip nat outside
ip mtu 1492
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
dialer idle-timeout 0
dialer persistent
ppp authentication chap pap callin
ppp chap hostname username@unifi
ppp chap password mypassword
ppp pap sent-username username@unifi password mypassword

ip route Dialer1

dialer-list 1 protocol ip permit
ip nat inside source list INTERNET_ACL interface Dialer1 overload

ip access-list extended INTERNET_ACL
permit ip any

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13 Jun

Cisco NX-OS/IOS Configuration Differences and tidbits

Differences between IOS and NXOS.


IOS to NXOS migration tool

Minimum Recommended Code Levels.

Data Center switching support forums on Cisco.com.