DBS V2 has improved the cell planning and there have been some improvements 
in the performance of DSP, CPU and Memory themselves.
But these changes do not have an effect on the whole performance such as radio coverage. 

I am writing to inform you of software upgrading method for DBS V2.
To support DBS V2 operation for 8BSI, you need to do the patch job before
uploading program to 8BSI. 
If you load DBS V2 Hex file without this patch job, you may have a problem. 

If you run the command "FLO" for 8BSI, you will see some information as
below;

========== Select One ==========
 [1]  BSI    HEX FILE Loading (Addr = 0x00110000)
 [2]  DBS    HEX FILE Loading (Addr = 0x00150000)
[3]  DBS V2 HEX FILE Loading (Addr = 0x00168000)
[R]  Restart


If the address of [3] is 0x00168000, you must do the patch job. Before you
do the patch job, do not upload V2DBS.HEX file to 8BSI.
The way to do the patch job is as follows;
1.	After you run "FLO" command for 8BSI, select [1] and then upload
8BSI V4.0(BSIROM.HEX) first of all.
2.	And then select "R" and restart 8BSI.
3.	As soon as you did restart 8BSI, patch job will be done soon.


The way to examine patch job completion is as follows;
If you run "FLO" command for 8BSI, you will see the screen as below;

========== Select One ==========
 [1]  BSI    HEX FILE Loading (Addr = 0x00110000)
 [2]  DBS    HEX FILE Loading (Addr = 0x00150000)
[3]  DBS V2 HEX FILE Loading (Addr = 0x00170000)
[R]  Restart


If the address of [3] is 0x00170000, patch job was finalised sucessfully.
If you can check it, you can do the next progress, uploading V2DBS.HEX file.

If the version of 8BSI is V3.0(11th, Jan 2001), you do not need to upload
DBSROM.HEX file of [2] menu.
If the version of 8BSI is old version than V3.0 dated 11th, Jan 2001, you
have to upload DBSROM.HEX file.

If you would like to understand it more clearly, please refer the manual
page 8 of attched file.


Attachments:

1.4BSI ROM (checksum:6A40)
2.BSIROM.HEX  (for 8BSI loading)
3.V2DBS.HEX   (for 8BSI loading; Please check it whether patch jobwas completed)
4.DBSROM.HEX  (for 8BSI loading, same as V3.0 you have)
5.Jig setting method