PumpKIN is a free, open-source and cross-platform TFTP server and TFTP client that comes with a block size option (up to 32MB) and provides transfer size and transfer timeout options (as described in RFC2348 and RFC2349).
PumpKIN for Mac is mainly used to allow for the maintenance of the network equipment which grabs images from the TFTP server.
PumpKIN is cross-platform and it works on Mac OS X and Windows. Binaries for the Windows platform are available on the project's homepage.
Here are some key features of "PumpKIN":
· Standard-compliant TFTP file transfer
· Unlimited simultaneous transfers
· Supports TFTP blocksize option
· Intuitive GUI