I bought new Serial to USB adapter and now i can connect to WebPBrick. Unfortunately now I can't download firmware as it stops after a few seconds - it always stops at different block number:
Connected to serial device (baudrate: 2400). 🔗 Communication working, RCX is alive! ℹ️ ROM version: 3.1, Firmware version: 0.0 ❌️ Firmware version '0.0' indicates that currently no firmware is loaded into RAM.
Firmware download request confirmed.
🧮 Firmware size in bytes: 24944
Firmware size exceeds 19 kBytes. Limited checksum calculation to first 19 kBytes.
🧮 Calculated firmware checksum: 0x2F8E
🥾 Entered boot mode. 🐌 Began firmware download...
🧱 Calculated 1248 firmware blocks to download. ⏳ Successfully downloaded firmware block 1/1248 (0.1 %) ⏳ Successfully downloaded firmware block 2/1248 (0.2 %) ⏳ Successfully downloaded firmware block 3/1248 (0.2 %) ⏳ Successfully downloaded firmware block 4/1248 (0.3 %) ⏳ Successfully downloaded firmware block 5/1248 (0.4 %) ⏳ Successfully downloaded firmware block 6/1248 (0.5 %) ⏳ Successfully downloaded firmware block 7/1248 (0.6 %) ⏳ Successfully downloaded firmware block 8/1248 (0.6 %) ⏳ Successfully downloaded firmware block 9/1248 (0.7 %) ⏳ Successfully downloaded firmware block 10/1248 (0.8 %) ⏳ Successfully downloaded firmware block 11/1248 (0.9 %) ⏳ Successfully downloaded firmware block 12/1248 (1 %) ⏳ Successfully downloaded firmware block 13/1248 (1 %) ⏳ Successfully downloaded firmware block 14/1248 (1.1 %) ⏳ Successfully downloaded firmware block 15/1248 (1.2 %) ⏳ Successfully downloaded firmware block 16/1248 (1.3 %) ⏳ Successfully downloaded firmware block 17/1248 (1.4 %) ⏳ Successfully downloaded firmware block 18/1248 (1.4 %) ⏳ Successfully downloaded firmware block 19/1248 (1.5 %) ⏳ Successfully downloaded firmware block 20/1248 (1.6 %) ⏳ Successfully downloaded firmware block 21/1248 (1.7 %) ⏳ Successfully downloaded firmware block 22/1248 (1.8 %) ⏳ Successfully downloaded firmware block 23/1248 (1.8 %) ⏳ Successfully downloaded firmware block 24/1248 (1.9 %) ⏳ Successfully downloaded firmware block 25/1248 (2 %) ⏳ Successfully downloaded firmware block 26/1248 (2.1 %) ⏳ Successfully downloaded firmware block 27/1248 (2.2 %) ⏳ Successfully downloaded firmware block 28/1248 (2.2 %) ⏳ Successfully downloaded firmware block 29/1248 (2.3 %) ⏳ Successfully downloaded firmware block 30/1248 (2.4 %) ⏳ Successfully downloaded firmware block 31/1248 (2.5 %) ❌️ Download error during block #32, retrying...