This process does not change the hardware, but it requires using specific tools.
Note: Do not connect the VCC (power) pin from your adapter, as the Time Capsule will be powered by its own internal power supply. Step 3: Access the Bootloader (U-Boot) apple time capsule custom firmware
Rather than a full firmware replacement, most "custom" work involves gaining root access to the existing NetBSD system to enable hidden features or run custom binaries. Enabling Root SSH Access : By using the airpyrt-tools This process does not change the hardware, but
Some users use root access to bypass regional Wi-Fi limitations, such as enabling Beamforming or 80 MHz channel widths in countries where they were software-locked. apple time capsule custom firmware
Time Machine will no longer support Time … - Apple Community