fseek(binfile, rootfsoff - fwaddr, SEEK_SET);
while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) {
read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile);
fseek(binfile, rootfsoff - fwaddr, SEEK_SET);
while (rootfsfile && !feof(rootfsfile) && !ferror(rootfsfile)) {
read = fread(readbuf, sizeof(uint8_t), sizeof(readbuf), rootfsfile);