User`s guide

Chapter XVIII. Unified Boot
Chelsio T5/T4 Unified Wire For Linux Page 345
xv. Run the following command to flash the appropriate firmware (t4fw-x.x.xx.x.bin for T4
adapters; t5fw-x.x.xx.x.bin for T5 adapters).
C:\CHELSIO>cfut4 -d <idx> -uf <firmware_file>.bin
Here, idx is the CNA index found in step xi (0 in this case) and firmware_file.bin is the
firmware image file present in the CHELSIO folder.