Thanks for your quick answer Wolfgang,
curiously I am getting different results and no decompressed files.
python unpack.py DS1000ZUpdate.GEL
instrument series: DS1000Z
firmware version: 00.04.04.03.02
updateType: 0x00070000
found 10 files
{'start': 640, 'unknown': (0, 0, 0), 'filename': '/sys/SparrowAPP.out', 'crc': 2922331421, 'length': 1085971, 'type': 1}
{'start': 1086611, 'unknown': (0, 0, 0), 'filename': '/sys/SparrowFPGA.hex', 'crc': 1737700535, 'length': 803698, 'type': 5}
{'start': 1890309, 'unknown': (0, 0, 0), 'filename': '/sys/SparrowDGFPGA.hex', 'crc': 3841850537, 'length': 290564, 'type': 6}
{'start': 2180873, 'unknown': (0, 0, 0), 'filename': '/sys/logo.hex', 'crc': 2888623556, 'length': 768024, 'type': 10}
{'start': 2948897, 'unknown': (0, 0, 0), 'filename': '/sys/guiResData.hex', 'crc': 4026022475, 'length': 748076, 'type': 12}
{'start': 3696973, 'unknown': (0, 0, 0), 'filename': '/sys/guiPicData.hex', 'crc': 3101109682, 'length': 124607, 'type': 17}
{'start': 3821580, 'unknown': (0, 0, 0), 'filename': '/sys/SparrowConfig.hex', 'crc': 3134270256, 'length': 768024, 'type': 16}
{'start': 4589604, 'unknown': (0, 0, 0), 'filename': '/sys/SparrowWaveTable.hex', 'crc': 2957269910, 'length': 8424, 'type': 11}
{'start': 4598028, 'unknown': (0, 0, 0), 'filename': '/sys/SparrowCalFile.hex', 'crc': 4225940020, 'length': 144028, 'type': 15}
{'start': 4742056, 'unknown': (0, 0, 0), 'filename': '', 'crc': 0, 'length': 280, 'type': 50}
writing /header (640 bytes)
writing /sys/SparrowAPP.out.header (24 bytes)
writing /sys/SparrowAPP.out (1085947 bytes)
writing /sys/SparrowFPGA.hex.header (24 bytes)
writing /sys/SparrowFPGA.hex (803674 bytes)
writing /sys/SparrowDGFPGA.hex.header (24 bytes)
writing /sys/SparrowDGFPGA.hex (290540 bytes)
writing /sys/logo.hex.header (24 bytes)
writing /sys/logo.hex (768000 bytes)
writing /sys/guiResData.hex.header (24 bytes)
writing /sys/guiResData.hex (748052 bytes)
writing /sys/guiPicData.hex.header (24 bytes)
writing /sys/guiPicData.hex (124583 bytes)
writing /sys/SparrowConfig.hex.header (24 bytes)
writing /sys/SparrowConfig.hex (768000 bytes)
writing /sys/SparrowWaveTable.hex.header (24 bytes)
writing /sys/SparrowWaveTable.hex (8400 bytes)
writing /sys/SparrowCalFile.hex.header (24 bytes)
writing /sys/SparrowCalFile.hex (144004 bytes)
CRC mismatch: '' (0x00000000 vs 0x6ad11bae)
writing /footer (280 bytes)
original filesize: 4742336
bytes processed: 4742336
It throws a CRC mismatch every time that I did not notice before. I downloaded the firmware zip archives from both rigol sources again, but the CRC mismatch won’t resolve.
The .GEL files from the two different archives have the same checksum: MD5 (DS1000ZUpdate.GEL) = 367ae75bed8864bf168f3afd63de835c
Edit: This is with the script from unpack8.zip