Wrong (or unknown) memory size on 747A+

cal_be's picture


I've just bought a 747A+ in ebay, to use on tracks with my motorbike, and when testing the device I noticed that the memory seems to be smaller than normal.

As you can see in the picture 747A+_1, the number of points that can be recorded with the selected options is 52019.
But, with 4MB of internal memory, it should be able to store 104038, see picture 747A+_2.
So it seems that I only have 2MB...

When looking at the FlashInfo (see picture 747A+_3), the flash type is 1C30161C, and the memory size unknown (??).
So I guess the size of 2MB is taken as default value, since the flash type/size is unknown/unreadable.

Has someone already encounter this situation or has my memory a problem.

I have set the recording of all possible data and the frequency on 5Hz, to test how much information I can really stored on the device.


cal_be's picture

  In fact it was "unknown


In fact it was "unknown memory type".
When the memory is full, 24272 points are stored (199% of the memory according to the software). And the .bin file has a size of 4096 KB.
I guess the flashID 1C30161C is a new type...

mdeweerd's picture

Hi This flash type is nown in


This flash type is nown in the newer BT747 version - you are using 1.68?

cal_be's picture

Hi, I use the last full


I use the last full version of BT747_2.0.1_full.
Either the desktop version or the PDA like version do not identify the size of the flash.

mdeweerd's picture

Ok, I'll have to release the

Ok, I'll have to release the current development version as a stable version then.  I tested using my virtual device model and the development version identifies the flash.

cal_be's picture

Many thanks for the feedback

Many thanks for the feedback !

cal_be's picture

An other thing, when the

An other thing, when the memory is full I got a message about corrupted memory (I use the french version so I do not know what is exactely written in englsih) and the software asks me to deleted the memory.
I have to refuse and first download the stored points otherwise they will be lost.