> gbasend --help
Usage: gbasend [<file>] [-p <port>] [-b <baud>] [-h <handshake-wait>] [-x] [-m] [-n] [-l] [-r] [--speed-test] [--serial-chunk-size <serial-chunk-size>] [--serial-chunk-delay <serial-chunk-delay>]
gbasend v0.0.1, a Serial<->SPI GBA Multiboot Sender by nullstalgia (2025)
Positional Arguments:
file binary to send to GBA via Multiboot/nootloader/Xboo.
Options:
-p, --port specify a serial/COM port to connect to, otherwise will
automatically attempt to find a compatible device.
-b, --baud for normal serial devices, specifies the baud rate to
connect with. for USB GBA Pico FW, sets the SPI transfer
baud rate directly.
-h, --handshake-wait
seconds to wait for initial GBA handshake, set to 0 to wait
forever, default is 30 secs.
-x, --xboo knock on Xboo Burst Boot Backdoor and try to upload provided
binary via nootloader.
-m, --multiboot try multiboot exclusively.
-n, --nootloader uploads (via Multiboot) or detects nootloader, then uploads
provided binary. --skip-nootloader-patch to skip patching
entry point to 0x20000C0
-l, --blind send binary via nootloader without verifying responses
(nootloader only).
-r, --reset send HardReset payload to GBA.
--speed-test performs a binary search across SPI Clock Speeds to quickly
estimate a maximum possible baudrate (gbasend-compatible
firmware required).
--serial-chunk-bytes
num of bytes to send over serial with every transaction.
--serial-chunk-delay
delay after every sent serial chunk in ms.
-h, --help, help display usage information