We have a problem downloading to the STM32L100 processor. It was programmed using STLink. Now we want to use STM32CubeProgrammer. Writing is not possible! It is not possible to change the RDP value either. If we use STLink, all is OK.
10:55:25 : ST-LINK SN : 0034003E3137510339383538
10:55:25 : ST-LINK FW : V3J8M3B5S1
10:55:25 : Board : STLINK-V3MODS
10:55:25 : Voltage : 3.29V
10:55:25 : SWD freq : 8000 KHz
10:55:25 : Connect mode: Under Reset
10:55:25 : Reset mode : Software reset
10:55:25 : Device ID : 0x429
10:55:25 : Revision ID : Rev Y
10:55:25 : UPLOADING OPTION BYTES DATA ...
10:55:25 : Bank : 0x00
10:55:25 : Address : 0x40023c1c
10:55:25 : Size : 136 Bytes
10:55:25 : Bank : 0x01
10:55:25 : Address : 0x1ff80000
10:55:25 : Size : 136 Bytes
10:55:25 : UPLOADING ...
10:55:25 : Size : 1024 Bytes
10:55:25 : Address : 0x8000000
10:55:25 : Read progress:
10:55:25 : Data read successfully
10:55:25 : Time elapsed during the read operation is: 00:00:00.003
10:55:51 : Option byte command : -ob RDP=187
10:55:51 : PROGRAMMING OPTION BYTES AREA ...
10:55:51 : Bank : 0x01
10:55:51 : Address : 0x1ff80000
10:55:51 : Size : 136 Bytes
10:55:51 : Reconnecting...
10:55:52 : Reconnected !
10:55:52 : UPLOADING OPTION BYTES DATA ...
10:55:52 : Bank : 0x00
10:55:52 : Address : 0x40023c1c
10:55:52 : Size : 136 Bytes
10:55:52 : Bank : 0x01
10:55:52 : Address : 0x1ff80000
10:55:52 : Size : 136 Bytes
10:55:52 : OPTION BYTE PROGRAMMING VERIFICATION:
10:55:52 : Error: Expected value for Option Byte "RDP": 0xBB, found: 0xAA
10:55:52 : Error: Option Byte Programming failed