Re: VX5400 memo (Notes) test, version 1.0.3.20071206

The field in question looked like a creation date (measured in seconds  
since the brew epoch). It wouldn't surprise me if the date was  
actually used as a unique identifier on some phones. It isn't be a  
problem to add some sort of increment to this value. The Voyager isn't  
affected by this problem but I will check if it affects the VX-8350.

-Nathan Hjelm

On Dec 7, 2007, at 2:41 AM, [email protected] wrote:

> Using the VX5400 setting of version 1.0.3.20071206, there are no  
> exceptions raised when reading or writing notes.  The notes are read  
> into Bitpim correctly.  But when writing notes to the phone, all of  
> the notes have the same text and date/time as the first note in sch/ 
> memo.dat.
>
> If anyone has a VX8550, could you check to see if the same thing is  
> happening on that phone?
>
> I have done some testing on the VX5400 to find out where the problem  
> is.  In sch/memo.dat, the first 4 bytes (apparently a dword?) are  
> reserved for the number of text notes (memos), with low byte first.   
> Bitpim increments and decrements this dword(?) correctly.
>
> After those first 4 bytes, there are 312 byte segments written for  
> each note.  The text of the note begins at the 5th byte of the 312  
> byte segment and continues for 301 total bytes (each note has a text  
> limit of 300 characters + null delimiter = 301 bytes).  After the  
> 301 bytes for the note's text, there are 7 remaining bytes of which  
> the first 4 (again, a dword?) appear to be a date/time reference for  
> the note.  The last 3 bytes are 0.  I tested the 300 character text  
> limit of the VX5400 -- Bitpim is writing the text correctly, and  
> truncates after 300 characters.
>
> I don't know what the first 4 bytes (dword?) of each note segment  
> represents, but for the first 4 bytes (dword?) of each note segment,  
> Bitpim writes an identical dword for all notes.  If the notes are  
> sent to the VX5400 phone from Bitpim, all of the notes on screen  
> will have the same text (and date/time) as the first note of  
> memo.dat (the notes are written correctly by Bitpim to memo.dat, but  
> the phone is apparently unable to read memo.dat correctly).  If I  
> manipulate the memo.dat file and make the first dword for each note  
> segment unique (no particular order, and any of the 4 bytes of the  
> dword), the notes appear on the phone with the correct text and date/ 
> time.
>
> So, it appears that the VX5400 requires this dword to be unique for  
> each note entry, even though the actual value of the dword appears  
> to be insignificant.  Is there a way to make this dword unique for  
> each note in the VX5400 (or possibly in the parent phone -- VX8550  
> -- if it is showing the same problem)?
>
> When entering a note on the phone, the dword appears to be  
> increasing based on the time (but I don't believe the actual value  
> is significant).  Is it possible to take the dword value that Bitpim  
> is writing for the first note and increment it for each note?
>
> Thanks.
>
> Ron
>
>
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