RunApp.py fails with 'Exception : Invalid status 6d00'

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
cli, embedded-iot

Research direction

Start with ledgerblue/runApp.py and follow the failing call into ledgerblue/hexLoader.py and ledgerblue/comm.py, using the reported command and traceback as the reproduction. Determine why the Nano S returns status 6d00 and verify that the loader handles the reported invocation successfully.

Written by the indexing model from the issue text.

Description

  • Python 2.7
  • Nano S - open at dashboard
  • ECPy version==0.8.1 (to get around 'ECPy requires Python '>=3' but the running Python is 2.7.13' issue)

Command:
$ python -m ledgerblue.runApp --targetId 0x31100002 --appName Bitcoin

Trace:

Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/local/lib/python2.7/site-packages/ledgerblue/runApp.py", line 61, in <module>
    loader.runApp(args.appName)
  File "/usr/local/lib/python2.7/site-packages/ledgerblue/hexLoader.py", line 242, in runApp
    self.exchange(self.cla, 0x00, 0x00, 0x00, data)
  File "/usr/local/lib/python2.7/site-packages/ledgerblue/hexLoader.py", line 86, in exchange
    return self.card.exchange(apdu)
  File "/usr/local/lib/python2.7/site-packages/ledgerblue/comm.py", line 130, in exchange
    raise CommException("Invalid status %04x" % sw, sw, response)
ledgerblue.commException.CommException: Exception : Invalid status 6d00

results appear to be the same regardless of the argument passed to --appName (or whether or not the argument is enclosed in quotes).

Dominant language
Python
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Forks
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