I just updated the firmware on the LINK tool as the utility app said the firmware on the cable was an old version.
Following the instruction appeared on the screen, I updated the firmware using the option from the menu ST-LINK -> Firmware Update.
The firmware on the link cable is now V2J23S4 according to the information on the screen.
Before the update, connecting to the target and programming the .srec file used to take only a matter of a few seconds.
Now, with the new one, it took almost 1 hour until it finally released the connection and the device memory is displayed (it took further 20 minutes after the "Verification... OK " message appeared on the screen (please see below), until the GUI fubakkt became responsive).
Below is the log - please can you tell us what is causing this problem, or could we have the old version of the firmware back?
13:35:05 : ST-LINK SN : 55FF79064986565716411287
13:35:05 : ST-LINK Firmware version : V2J23S4
13:35:05 : Connected via SWD.
13:35:05 : SWD Frequency = 005 KHz.
13:35:05 : Connection mode : Connect Under Reset.
13:35:05 : Debug in Low Power mode enabled.
13:35:06 : Device ID:0x414
13:35:06 : Device flash Size : 512KBytes
13:35:06 : Device family :STM32F10xx High-density
13:36:13 : [testboard debug console 13-04-2018.srec] opened successfully.
14:02:16 : Flash memory programmed in 25mn and 50s and 868ms.
14:02:16 : Verification...OK