iPhone OS upgrade to 3.1

Since I have my (3GS) 3.0 ECID SHSH on file with Cydia, I decided a while ago to update to 3.1. So I Pwnagetool-ed a ipfw and installed. Now, I wanted to try out the new modem firmware too and updated to official 3.1 firmware, only to come to conclusion it makes things more difficult and fixes nothing. Anyways, I went back to 3.0 and had to redsn0w it because it doesn't work with the new modem firmware. Then I installed the pwned 3.1 again and it works again.
Again, AptBackup gave an error but was easily fixed by duping the list files, press backup, restore list files, restore.

Security tips:
vim /Library/LaunchDaemons/com.openssh.sshd.plist
Remove <key>Bonjour</key><array>...</array> to hide from bonjour (local net).
If you want to change the portnumber from 22 to 443 or so, you can change SockServiceName from ssh to https or perhaps some number.
Connect with -p option: ssh root@your-iPhone.local -p 443
After changing, toggle SSH off and on and then connect with a 2nd terminal to try it out before closing the 1st.
And as always, don't forget to change password for mobile and root.

Xcode 3.1.3

With the new OS installed on the iPhone, Xcode complains it needs an update. So it updated to 3.1.3.
Again, I applied the modifications to skip provisioning profile.
In terminal, type open /Developer/Platforms/iPhoneOS.platform/Info.plist (opens with Property List Editor)
Under defaultProperties add/edit rows:

PROVISIONING_PROFILE_ALLOWED = NO;
PROVISIONING_PROFILE_REQUIRED = NO;

This works however only with Xcode for iPhone OS 2.x.
But you can replace the iPhoneRemoteDevice executable with one one from the older Xcode.
After that, Xcode initially crashed and disconnected the cable and removed an invalid entry in the Organizer. I get some internal errors but it can be skipped by holding the return key.
I also had a problem with my project. product-pkg-utility reported that CFBundleIdentifier cannot have illegal characters (e.g. underscore).
Anyways, I can debug again.

Update: Copying the whole iPhoneRemoteDevice.xcodeplugin directory seems to work now too.
Update2: Still seems to crash, although after "Reset and relaunch" it does not crash. Weird...
Whoa... starting "/Developer/Applications/Xcode.app/Contents/MacOS/Xcode &" from Terminal seems to work in any case.

Other links: here, here here and here

iPhone OS upgrade to 3.0

Taking my chances to upgrade to the latest OS version 3.0 for iPhone.
So, first needed to backup some things: AptBackup, SpringBack and finally, a backup with iTunes.
Then create a custom ipsw with Pwnagetool. To install this ipsw, I put the iPhone into recovery mode (did not need the DFU mode, since it was already hacked) by holding both buttons on the iPhone and release the sleep button when screen goes black. Installation went fine, but...

AptBackup icon was hidden because I used the Categories app. No sweat on that, but after unhiding, AptBackup failed on me since it wasn't tested with 3.0 yet.
Solution: Installed OpenSSH and APT again and ran the following command:

for p in `cut -f 1 /User/Library/Preferences/aptbackup_dpkg-packages.txt`; do apt-get -y --force-yes install $p; done

Any packages not for 3.0 won't be installed (like mobileinstallation patch), so you need to find a newer version for them.

I seemed to have lost most settings of Cydia apps since iTunes only backs up managed settings. This includes categories, spbk files, whatever. The only items in /User where Applications, Documents, Library and Media.
So next time, I'll copy the other items manually. Also /Library/Themes for custom themes.
Tip: Get Macfusion/FUSE to mount the iPhone volume on your Mac. Or use Cyberduck.

Replace yellown0w with ultrasn0w if you updated the baseband firmware (Pwnagetool does that by default btw!). At the time of me writing it wasn't released yet though... oops.

UIProgressView custom draw method

Code snippet of a UIProgressView subclass that implements custom draw method.
This example uses four images for the left side, right side and ten sections that can be either on/off or partially filled.
My images included edge and shadow and named: pb_left.png (9x32), pb_right.png (9x32), pb_on.png (28x32). pb_off.png (28x32)

- (void)awakeFromNib
{
 [self setBackgroundColor:[UIColor clearColor]];
}

// allow non-clear background color in Interface Builder, but do not draw it
- (BOOL)getClearsContextBeforeDrawing
{
 return NO;
};

// draw left and right edge of progress bar with filled sections between
- (void)drawRect:(CGRect)rect
{
 const int numParts = 10;
 UIImage *pb_left = [UIImage imageNamed:@"pb_left.png"];  // "["
 UIImage *pb_right = [UIImage imageNamed:@"pb_right.png"]; // "]"
 UIImage *pb_on = [UIImage imageNamed:@"pb_on.png"];   // "X"
 UIImage *pb_off = [UIImage imageNamed:@"pb_off.png"];  // " "
 CGPoint p = {0,0};
 [pb_left drawAtPoint:p];
 p.x = pb_left.size.width;
 int q = (int)(self.progress * numParts);
 for (int i=0; i<numParts; i++)
 {
  if (i == q)  // partial on/off section. works with semi-transparent images too
  {
   float w = truncf(pb_on.size.width * fmodf(self.progress * numParts, 1.0f));
   [pb_on drawInRect:CGRectMake(p.x, p.y, w, pb_on.size.height)];
   [pb_off drawInRect:CGRectMake(p.x + w, p.y, pb_on.size.width - w, pb_on.size.height)];
  }
  else if (i < q)
  {
   [pb_on drawAtPoint:p];
  }
  else // (i > q)
  {
   [pb_off drawAtPoint:p];
  }
  p.x += pb_on.size.width;
 }
 [pb_right drawAtPoint:p];
}

Semi-transparent overlay for UIButton subclass

A little snippet for subclassed UIButton that adds an UIImageView overlay.
You can then animate the alpha property.

- (void)awakeFromNib
{
 UIImage *img = [self imageForState:UIControlStateSelected];
 overlayImage = [[UIImageView alloc] initWithImage:img];
 overlayImage.alpha = 0.0f;
 [self addSubview:overlayImage];
 // [self addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchDown];
 // you could call custom highlight handler
}

- (void)setHighlightedByAlpha:(BOOL)highlighted
{
 [UIView beginAnimations:nil context:@"hmm"];
 [UIView setAnimationCurve: UIViewAnimationCurveLinear];
 [UIView setAnimationDuration:0.2f];
 overlayImage.alpha = highlighted ? 1.0f : 0.0f;
 [UIView commitAnimations];
}