diff --git a/README.md b/README.md
index 4c3c53a..fe8f121 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,7 @@ If it happens to you please append your message to [Issue #52](https://github.co
 ### Important tips:
 * Use high quality source files. **This little detail have a major impact on the final result.**
 * Read tooltip of _High/Ultra quality_ option. There are many important informations there.
+* When converting images smaller than device resolution remember to enable upscaling.
 * Check our [wiki](https://github.com/ciromattia/kcc/wiki/Other-devices) for a list of tested Non-Kindle E-Readers.
 * The first image found will be set as the comic's cover.
 * All files/directories will be added to EPUB in alphabetical order.
diff --git a/kcc/KCC_gui.py b/kcc/KCC_gui.py
index 5f91198..9a94db4 100644
--- a/kcc/KCC_gui.py
+++ b/kcc/KCC_gui.py
@@ -73,7 +73,7 @@ class VersionThread(QtCore.QThread):
         except Exception:
             return
         latestVersion = XML.childNodes[0].getElementsByTagName('latest')[0].childNodes[0].toxml()
-        if latestVersion != __version__:
+        if tuple(map(int, (latestVersion.split(".")))) > tuple(map(int, (__version__.split(".")))):
             self.emit(QtCore.SIGNAL("addMessage"), 'New version is available!', 'warning')
 
 
diff --git a/kcc/comic2ebook.py b/kcc/comic2ebook.py
index e8ba199..30ee6e0 100755
--- a/kcc/comic2ebook.py
+++ b/kcc/comic2ebook.py
@@ -193,7 +193,6 @@ def buildNCX(dstdir, title, chapters):
 
 def buildOPF(dstdir, title, filelist, cover=None):
     opffile = os.path.join(dstdir, 'OEBPS', 'content.opf')
-    # read the first file resolution
     profilelabel, deviceres, palette, gamma, panelviewsize = options.profileData
     imgres = str(deviceres[0]) + "x" + str(deviceres[1])
     if options.righttoleft:
@@ -337,7 +336,7 @@ def applyImgOptimization(img, isSplit, toRight, options, overrideQuality=5):
         img.resizeImage(options.upscale, options.stretch, options.black_borders, isSplit, toRight,
                         options.landscapemode, options.quality)
     img.optimizeImage(options.gamma)
-    if options.forcepng:
+    if options.forcepng and not options.forcecolor:
         img.quantizeImage()
 
 
@@ -800,10 +799,8 @@ def checkOptions():
             or options.profile == 'KF' or options.profile == 'KFHD' or options.profile == 'KFHD8':
         options.quality = 0
     # Disabling grayscale conversion for Kindle Fire family.
-    # Forcing JPEG output. For now code can't provide color PNG files.
     if options.profile == 'KF' or options.profile == 'KFHD' or options.profile == 'KFHD8' or options.forcecolor:
         options.forcecolor = True
-        options.forcepng = False
     else:
         options.forcecolor = False
     # Mixing vertical and horizontal pages require real Panel View.
diff --git a/kcc/image.py b/kcc/image.py
index 2874c1c..2accc6d 100755
--- a/kcc/image.py
+++ b/kcc/image.py
@@ -28,14 +28,6 @@ except ImportError:
     exit(1)
 
 
-class ImageFlags:
-    Orient = 1 << 0
-    Resize = 1 << 1
-    Frame = 1 << 2
-    Quantize = 1 << 3
-    Stretch = 1 << 4
-
-
 class ProfileData:
     Palette4 = [
         0x00, 0x00, 0x00,
@@ -181,7 +173,7 @@ class ComicPage:
             size = (self.size[0], self.size[1])
         else:
             size = (self.panelviewsize[0], self.panelviewsize[1])
-        # Kindle Paperwhite - Force upscale of splited pages to increase readability
+        # Kindle Paperwhite/Touch - Force upscale of splited pages to increase readability
         if isSplit and landscapeMode:
             upscale = True
         if self.image.size[0] <= self.size[0] and self.image.size[1] <= self.size[1]: