[7" Kindle Fire HD Q&A, Help & Troubleshooting] wine_00:
Ok, I try again (always blackscreen), and this is all the fix say during the process:

Could Not Find C:\WINDOWS\system32\framework-res.apk.orig
Doing prelim checks...
Passed!
***********************************************
* Checking For Backup *
***********************************************
* This may take a moment. *
***********************************************

remote object '/data/local/framework-res.apk.orig' does not exist

No Backup Found. (this isn't a bad thing)

***********************************************
* Beginning Wallpaper Fix! *
* This will take a few minutes to complete. *
***********************************************
5708 KB/s (34047391 bytes in 5.824s)
Decompiling framework-res.apk...
Input file (framework-res.apk) was not found or was not readable.

FINDSTR: Cannot open decompiling\res\values\bools.xml
Patching bools.xml...
'xml.exe' is not recognized as an internal or external command,
operable program or batch file.
'unix2dos.exe' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the path specified.
0 file(s) moved.
Recompiling framework-res.apk...
Exception in thread "main" brut.androlib.AndrolibException: brut.directory.Direc
toryException: java.io.FileNotFoundException: decompiling (The system cannot fin
d the file specified)
at brut.androlib.Androlib.readMetaFile(Androlib.java:164)
at brut.androlib.Androlib.build(Androlib.java:183)
at brut.androlib.Androlib.build(Androlib.java:176)
at brut.apktool.Main.cmdBuild(Main.java:228)
at brut.apktool.Main.main(Main.java:79)
Caused by: brut.directory.DirectoryException: java.io.FileNotFoundException: dec
ompiling (The system cannot find the file specified)
at brut.directory.ZipRODirectory.<init>(ZipRODirectory.java:55)
at brut.directory.ZipRODirectory.<init>(ZipRODirectory.java:38)
at brut.androlib.res.util.ExtFile.getDirectory(ExtFile.java:55)
at brut.androlib.Androlib.readMetaFile(Androlib.java:160)
... 4 more
Caused by: java.io.FileNotFoundException: decompiling (The system cannot find th
e file specified)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at brut.directory.ZipRODirectory.<init>(ZipRODirectory.java:53)
... 7 more
'7za.exe' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the file specified.
Updating framework-res.apk
'7za.exe' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the file specified.

***********************************************
* Backing Up Original framework-res.apk *
* Please grant if a superuser request comes up*
***********************************************

Backup safety check temporarily disabled due to bug. (this doesnt really hurt a
nything as most people just flash back to fix it anyways.)
Installing Wallpaper Fix...
4791 KB/s (34047391 bytes in 6.939s)

***********************************************
* Congratulations! *
***********************************************
* Your wallpaper should now function! *
***********************************************
* Thanks for using Stunts Wallpaper Fix! *
***********************************************
Cleaning Up...
Could Not Find C:\WINDOWS\system32\framework-res.apk
Could Not Find C:\WINDOWS\system32\newframework-res.apk
Could Not Find C:\WINDOWS\system32\resources.arsc
The system cannot find the file specified.
Press any key to continue . . .

If there is no solution, I'll install a custom ROM I think. Simplest I think^^

But a question about that, with another ROM, can I'll still be able to use the Amazon market, read my books buy on, and everything like the Amazon ROM?

If It's ok with that, I think this is the solution.

Is there a really safe processus for? And good custom ROM with this device?

Sorry for all my stupid questions, I'm a really noob with root, etc...