Category Archives: Gadgets

How to Update SpeedCam File for MioMap 3.3

It’s been a while for me to write something about Mio C230. Some of you might notice the recent posts about iPhone. I have not forgotten about my little Mio C230 yet. It’s just that I don’t have much time to cover both topics.

Anyway, remember that I wrote a post about updating the speedcam file for Mio C230. The file was compiled back in 2007 and it has not been updated since then. I thought it’s time to get an updated file. This time, I’ll tell you a way to generate the file using free download from a web site. As long as the site keeps updating the file, the data should be accurate.

  1. Visit this site. Click on the Download button to download the file.
  2. Click on iGo 8 Text Format on the next screen. Name the file speedcam.txt .
  3. Connect your Mio GPS to the computer using a USB cable. The device shows up as a drive (Mio Device).
  4. Browse to the folder MioMap/MioMap/POI/SPEEDCAM on the Mio Device. If you have previous file in the folder, make a backup and then either delete it or rename it.
  5. Copy speedcam.txt to this location.
  6. Disconnect the GPS. (You might want to do safely remove the mass storage device before you disconnect it.)

The next time you run MioMap, you can see the speedcams on your map.


  1. If you have previously added some customary speedcams, the info is lost if you follow this guide to update the file.
  2. The downloaded file includes both red light cameras and speed traps.

How to Check SHA1 Sum on OS X

If you ever wonder how to check SHA1 sum on OS X, here is how. Open up a Terminal window. Change the directory to the file location. Issue the following command.

openssl sha1 filename

The openssl can also check the following digests: md2, md5, mdc2, rmd160 and sha. This is useful when you download some files not from the original sites and you want to check the integrity of the files.

I was trying to download the Pwange tool using bit torrent client. After the download was complete, I was surprised to find that the file has been tampered because the checksum is different. I heard that there are increasing interests in the hacker communities about iPhone and Mac OS X. Maybe this is a sign. You might want to check your downloads from now on.

Free Video Recorder for iPhone – Cycorder

[Note:] This is only available for jailbroken iPhone.

When I checked Cydia for new programs yesterday and I was pleasantly surprised that there is a video recorder and it’s even free. The program is written by Jay Freeman who is the author of Cydia.

The program features real-time compression, the algorithm used is MJPEG. Compared to the paid iPhoneVideoRecorder, Cycorder captured video is of higher quality but the file size is much bigger. The only drawback for now is there is no sound recording. The author said the new version with sound is coming out in a week. Let’s hope it would stay free once the new version is out.

When you are done recording, the files are saved under /var/mobile/Media/Videos . You can use any sftp program to download the videos to your desktop. For scp users, you can simply use the following command to copy the files. (Remember to replace the IP address of your iPhone.) I have written a post about using DiskAid to transfer the files.

scp [email protected]:/var/mobile/Media/Videos/* .

I made a sample recording and posted it on YouTube.

If you are interested in the original, here is the link to the file.

I made another recording outdoors. Here is the YouTube video. This one is actually better in quality if you look at the original file, however the YouTube upload degraded the quality of the video.

iPhone 3G: Simple Way to Enter Recovery Mode

When I used the Pwnage Tool to jailbreak my iPhone, there is a method to enter Recovery Mode. It involves with several steps and correct timing for pushing the right button at the right time. I found a quicker and simpler way. Here are the steps.

  1. Press and hold the sleep button for a few seconds. Slide the red button to turn it off.
  2. Hold the home button and connect your iPhone to the computer with iTunes running.

That’s it.

Converting YouTube Videos to iPhone for Dummies

I was trying to download and convert some YouTube videos for my iPhone. I found the process is so easy and I’d like to share that method with you. What you need is just the free iTunes. No other paid program is needed. Here are the steps.

  1. Open up your favorite browser and go to and find the video you like.
  2. Select and copy the URL of the video

  3. Go to and paste the URL to the URL box. Click on DOWNLOAD.
  4. Two links appears. Right click on the SECOND link and select “Save Link As” to save the video in mp4 format.
  5. Open up iTunes and click on File -> Add File to Libary to add the mp4 file downloaded in step 4 to your iTunes Library.

  6. Connect your iPhone and sync it with your iTunes library.


NES Emulator 2.2.5 for iPhone Crashes – Fixed!

I just updated my NES Emulator to 2.2.5 and it keeps crashing after the update. It was working before the update.  I found one thread about this problem on

It turns out the executable of NES emulator is not signed. Assuming you have a OpenSSH set up. You can ssh in your iPhone and sign the executable by yourself.

Here are the commands after you ssh in.

apt-get install ldid
cd /Applications/
ldid -S NES

Note that if you already have ldid installed, you don’t have to run the first command. You might need to reboot your iPhone after you run these commands. The first time I tried to run these commands, it didn’t work. I did it the second time and it finally worked.

[Update] A new version 2.3.0 just came out. You can use Cydia to get the updated version.

AT&T Customers: Read This First before You Jailbreak Your iPhone 3G

When I followed some of the tutorials on the net to jailbreak my iPhone, I found that there is a critical information that some tutorials do not mention if you are a AT&T customer with an activated iPhone. That is if your iPhone has been activated with AT&T’s SIM card, you don’t want to check the option that says “Activate the phone“. Here is a screen shot of the PwnageTool 2.0.

This option is under General section when you use PwnageTool in Expert mode. If you use PwnageTool in Simple mode, make sure you answer “Yes” to the question “Are you a legit iPhone 3G user?“.

What if you have checked the option “Activate the phone”? Chances are your iPhone’s phone function will not work at all after you apply the custom built firmware. What can you do about this situation? You can try to use iTunes to restore your latest backup to your iPhone. If the phone is still not working, the last resort is to restore it using the original firmware that you downloaded from Apple.