Hi sorry if posting so late.
My steps.
1. change the serial number, by inputting the serial manually.
2. You don't need to learn the new sensor manually, when I tried i got some error message, so after changing between sensors serial numbers I decided to stop trying to learn the sensor.
3. Take bike for a spin and the new sensors pressure should show on the display, it initially showed the old reading from previous sensor, took about 200m to show up new reading.
Hope it helps.