<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def cli(env, identifier):
 """Reflash server firmware."""


    mgr = SoftLayer.HardwareManager(env.client)
    hw_id = helpers.resolve_id(mgr.resolve_ids, identifier, 'hardware')
    if not (env.skip_confirmations or
            formatting.confirm('This will power off the server with id %s and '
                               'reflash device firmware. Continue?' % hw_id)):
        raise exceptions.CLIAbort('Aborted.')

    mgr.reflash_firmware(hw_id)