I try to program the FLASH memory on my target, but it does not work.

UDE Memtool fails with the message "Unknown FLASH Type". What can I do ?

UDE Memtool stores FLASH memory descriptions within the database file <UDE_DIRECTORY>/extflash.dat. The message above means, that the current FLASH memory is not described in the database. You may extend the database by appending a new FLASH memory definition or an alias FLASH memory definition, if a compatible FLASH memory is defined already. Refer to the FLASH memory datasheet for information about the FLASH device IDs and the internal bank structure. Additionally please note the header of the database for further information.

Use a simple text editor to edit a FLASH memory description or to add a new FLASH memory device into the database.
FLASH memory definition: 

                [<family>.<vendor_id>_<chip_id>]
                Name= <flash_name>
                Bank0= <bank_0_size> {,<number_of_equal_sized_banks>*}
                ..
                Bank[N]= <bank_n_bytesize>
Alias FLASH memory definition: 

                [<family>.<vendor_id>_<chip_id>]
                Name= <flash_name>
                Alias= <family>.<vendor_id>_<chip_id>
Syntax: 

                <family>                      := <predefined_textstring>
                <vendor_id>                   := <hexnumber; 2digits>
                <chip_id>                     := <hexnumber; 4digits>
                <flash_name>                  := <textstring>
                <bank_n_bytesize>             := 0x<hexnumber>
                <number_of_equal_sized_banks> := <decnumber>
Example: 

                ; 8 MBit, 16-bit chip, bottom boot block, AMD
                [AM29FX.01_2258]
                Name=Am29F800B
                Bank0=0x4000
                Bank1=0x2000
                Bank2=0x2000
                Bank3=0x8000
                Bank4=0x10000, 15*

                ; 8 MBit, 16-bit chip, bottom boot block, Hyundai
                ; (Alias mapped to Amd29F800B)
                [AM29FX.AD_2258]
                Name=HY29F800B
                Alias=AM29FX.01_2258