If you experience slow download speed with Linksys smart router in Comcast network, you are encountering a bug in some Linksys smart routers. When it happen, ipv4 speed test will be slower than real speed. However, ipv6 is not throttled. Comcast speed test on ipv4 speed is always < 20m. The cause is that IPv4 packets from the Comcast network are configured with DSCP 8, which Linksys smart routers will treat all package as low priority traffic and throttle their speed. ipv6 have correct DSCP so it is not affected. If you are facing this issue and using stock firmware, you can use the small fix below:
Resolve overheating issues on Linksys EA6300 EA6350 EA6400 EA6700 or similar routers
Linksys smart WiFi routers like EA6300 EA6350 EA6400 EA6700 or other similar design routers usually heat up very fast and have high temperature issue. CPU temperature usually stay over 90°c after short run even idle. Although Broadcom chips are said to have an operating rating up to 130°c, it is not recommend to let routers that run 24/7 stay in high temperature since it will shorten its lifespan. Some consumer routers are designed to fail within a certain period of time, but we can make some tweak to make it stay longer.
Install MacOS with clover EFI bootloader on ASUS Z87a
Clover is an open source EFI bootloader. clover can do better job than Chameleon, especially on newer UEFI based systems. Using Clover is easy and straightforward. There are tons of documents about how to use clover on Gigabyte motherboards because Gigabyte motherboards usually have less compatibility issues with MAC OS X in the old day. However, with Clover and new OS X after Yosemite, Asus motherboard can also be turned into a perfect Hackintosh. 
Hardwares used in this instruction: Motherboard: Asus Z87-A motherboard (Get ASUS Z87-A motherboard from Amazon) CPU: I7 4770K CPU or any LGA1150 CPU (Get LGA1150 CPU from Amazon) Graphics Card: Integrated Graphics Processor (HD Graphics 4600) Sound Card: Integrated Realtek ALC892 Overview for this instructions:
Native KeePass client for MAC OS X with KeePassHTTP - MacPass
Keeps can be used via Mono on OS X but lack of important functionality and not work very well. MacPass is a KeePass compatible password manager for OS X. MacPass is free and open source.
Disable ASUS Motherboard's UEFI secure boot
Most new ASUS motherboards do not have the option to let users to turn off the UEFI secure boot. The “Secure Boot Enabled” is always greyed out and unable to change that option. Yet, we do have the option to disable the secure boot by clearing secure boot keys.
Rename network name for MAC OS X
Network name is the unique name that differentiate a MAC or PC on a network. If you have more than one MAC and you start sharing things back and forth between your computers, the names of those MACs start to matter.
Try out Free New iOS Public Beta Update Without an Invite
Apple has launched the iOS public beta program which allowing anyone in a trial scheme to use the new iOS. This DOES NOT require your iOS device to be jailbroken and you DO NOT need to add your iOS device’s UDID to an Apple Developer Account. Install Beta version iOS DOES NOT void the warranty, but apps and services may not work the same because it is BETA! The benefits of using Beta version iOS are you are getting latest iOS, bug fix, and improvements. You can sign up for Apple’s Beta Software program by visiting Appleseed Beta testing site. However, you may not allow to use the iOS beta because it is invite based. You will have to wait to be selected. Once you are invited, you will have to option to download a iOS Beta Software Profile. After you install the profile into your iOS device, you will see the new version update available. If you don’t want to signup for beta program, don’t want the long wait for the invite, want a simple step to get beta iOS, following the step below.
Connect to Amazon EC2 Linux Instance from Windows Via PuTTY
PuTTY does not natively support the private key format (.pem) generated by Amazon EC2. If you load the .pem formet private key directly to PuTTY you will get error message: Unable to use key file “***.pem” (OpenSSH SSH-2 private key). PuTTY has a tool called PuTTYgen, which can convert keys to the required PuTTY format (.ppk). You must convert your private key into this format (.ppk) before connecting to your instance using PuTTY.
Fix Raspberry Pi OpenWrt Boot problem
If you install the OpenWrt into your Raspberry Pi can’t get it boot. The following steps might help you fix the problem. If you still don’t know how to install OpenWrt on Raspberry Pi, you can go to: How to install OpenWrt on Raspberry Pi After the installation process complete and when you boot the Raspberry Pi with OpenWrt the first time, you might be stuck while booting up the system. The console will stopped scrolling messages at
Add 802.11-n support to BCM47xx and BCM53xx OpenWrt
OpenWrt in default uses the reverse engineered b43 driver for BCM47xx and BCM53xx devices. With this driver only 802.11g is supported, but you can easily get wireless 802.11n working by installing the Broadcom open source brcmsmac driver. You can easily do make wireless N working by following below steps.