Bluetooth low energy not working (Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x )

Question

Hi all 
 My first post. I tried to finish one of Nordic tutorials. I need to use app from nrf connect(v 3.10.0): Bluettoth low energy (I have installed v3.0.1). I have nrf51DK with nrf51422xxAC. I can not connect to this app. Firstly received communicat: Device must be programmed (only option to proceed is "yes"). Then i received below logs: 
 
 10:13:38.316 
 Selected device with s/n 000681770775

10:13:44.104 
 Device setup completed

10:13:44.104 
 Note: Adapters with Segger JLink debug probe requires MSD to be disabled to function properly on MacOS and Linux. Please visit www.nordicsemi.com/nRFConnectOSXfix for further instructions.

10:13:44.104 
 Getting information from J-Link debugger...

10:13:44.104 
 Found device type: nRF51. J-Link firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jan 20 2022 16:43:31.

10:13:45.273 
 Connectivity firmware version: undefined. SoftDevice API version: undefined.

10:13:45.273 
 Unsupported soft-device version!

10:13:47.589 
 Device closed.

10:13:49.268 
 Selected device with s/n 000681770775

10:13:52.979 
 Uploading image through JLink: 0%

10:13:56.871 
 Uploading image through JLink: 100%

10:13:57.006 
 Device programming completed.

10:13:57.887 
 Device setup completed

10:13:57.888 
 Note: Adapters with Segger JLink debug probe requires MSD to be disabled to function properly on MacOS and Linux. Please visit www.nordicsemi.com/nRFConnectOSXfix for further instructions.

10:13:57.888 
 Getting information from J-Link debugger...

10:13:57.888 
 Found device type: nRF51. J-Link firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jan 20 2022 16:43:31.

10:13:58.859 
 Connectivity firmware version: 4.1.4. SoftDevice API version: 2.

10:13:58.860 
 Opening adapter connected to /dev/ttyACM0

10:13:59.770 
 Successfully opened /dev/ttyACM0. Baud rate:

10:13:59.771 
 Reset performed on adapter /dev/ttyACM0

10:14:00.331 
 Adapter connected to /dev/ttyACM0 opened

10:14:01.830 
 Received status with code 4 Unknown value, message: 'Error sending packet to target. Code: 0x' 
 
 I pasted logs from ubuntu 18.04, also tried on two PC with win10. The same result. I tried to connect nrf52832 chip with J-link embedded on 51DK. Programmer see this chip, but I also received similar logs. I close whole programs: VScode, programmer to be sure that none of them make conficts with BLE app. I expected sth like in this tutorial: https://www.youtube.com/watch?v=hY_tDext6zA&list=PLx_tBuQ_KSqE_Eyrg7ogzX33DWJDiq_AZ&index=5 Received: I flash app from from above tutorial and my phone with adroid see properly device. 
 I can connect to chip via terminal (nrfj prog) Don't know where next can try to find. Thanks for you for advance for your help 
 Regards