diff --git a/pyghmi/redfish/command.py b/pyghmi/redfish/command.py
index 9a1c1538..6afe2190 100644
--- a/pyghmi/redfish/command.py
+++ b/pyghmi/redfish/command.py
@@ -1486,7 +1486,7 @@ class Command(object):
     def get_update_status(self):
         return self.oem.get_update_status()
 
-    def update_firmware(self, file, data=None, progress=None, bank=None):
+    def update_firmware(self, file, data=None, progress=None, bank=None, otherfields=()):
         """Send file to BMC to perform firmware update
 
          :param filename:  The filename to upload to the target BMC
@@ -1498,7 +1498,7 @@ class Command(object):
         """
         if progress is None:
             progress = lambda x: True
-        return self.oem.update_firmware(file, data, progress, bank)
+        return self.oem.update_firmware(file, data, progress, bank, otherfields)
 
     def get_diagnostic_data(self, savefile, progress=None, autosuffix=False):
         if os.path.exists(savefile) and not os.path.isdir(savefile):
diff --git a/pyghmi/redfish/oem/ami/megarac.py b/pyghmi/redfish/oem/ami/megarac.py
index 28791baf..3f4c2b12 100644
--- a/pyghmi/redfish/oem/ami/megarac.py
+++ b/pyghmi/redfish/oem/ami/megarac.py
@@ -15,7 +15,7 @@
 import pyghmi.redfish.oem.generic as generic
 import pyghmi.util.webclient as webclient
 from urllib.parse import urlencode
-
+import pyghmi.exceptions as pygexc
 
 
 class OEMHandler(generic.OEMHandler):
@@ -35,6 +35,47 @@ class OEMHandler(generic.OEMHandler):
         self.bmc = webclient.thehost
         self._certverify = webclient._certverify
 
+    def reseat_bay(self, bay):
+        if bay != -1:
+            raise pygexc.UnsupportedFunctionality(
+                'This is not an enclosure manager')
+        
+        self._do_web_request('/redfish/v1/Chassis/Chassis_0/Actions/Oem/NvidiaChassis.AuxPowerReset', {
+            "ResetType": "AuxPowerCycle"
+        })
+
+    def format_messages(self, response):
+        msgs = response.get('Messages', [])
+        msgents = []
+        for msg in msgs:
+            msgents.append(self.format_message(msg))
+        for msg in response.get('Oem', {}).get('Ami', {}).get('HMCMessages', []):
+            msgents.append(self.format_messages(msg))
+        return ';'.join(msgents)
+
+    def update_firmware(self, filename, data=None, progress=None, bank=None, otherfields=()):
+        self._do_web_request('/redfish/v1/UpdateService', {
+            "Oem": {
+                "AMIUpdateService": {
+                "@odata.type": "#AMIUpdateService.v1_0_0.AMIUpdateService",
+                "PreserveConfiguration": {
+                    "Syslog": True,
+                    "NTP": True,
+                    "Network": True,
+                    "Authentication": True,
+                    "EXTLOG": True,
+                    "FRU": True,
+                    "IPMI": True,
+                    "KVM": True,
+                    "REDFISH": True,
+                    "SDR": False,
+                    "SEL": True,
+                    "SNMP": True,
+                    "SSH": True,
+                    "WEB": True
+            }
+            }}}, method='PATCH', etag='*')
+        return super(OEMHandler, self).update_firmware(filename, data=data, progress=progress, bank=bank, otherfields=otherfields)
 
     @property
     def wc(self):
diff --git a/pyghmi/redfish/oem/generic.py b/pyghmi/redfish/oem/generic.py
index a0df51d5..3512db44 100644
--- a/pyghmi/redfish/oem/generic.py
+++ b/pyghmi/redfish/oem/generic.py
@@ -753,6 +753,8 @@ class OEMHandler(object):
                     return {'bootdev': reqbootdev}
                 except Exception:
                     del payload['Boot']['BootSourceOverrideMode']
+            else:
+                payload['Boot']['BootSourceOverrideMode'] = 'UEFI'
         #thetag = fishclient.sysinfo.get('@odata.etag', None)
         fishclient._do_web_request(fishclient.sysurl, payload, method='PATCH',
                                    etag='*') # thetag)
@@ -1393,7 +1395,7 @@ class OEMHandler(object):
         usd, upurl, ismultipart = self.retrieve_firmware_upload_url()
         try:
             uploadthread = webclient.FileUploader(
-                self.webclient, upurl, filename, data, formwrap=ismultipart,
+                self.webclient, upurl, filename, data, formname='UpdateFile', formwrap=ismultipart,
                 excepterror=False, otherfields=otherfields)
             uploadthread.start()
             wc = self.webclient
@@ -1427,7 +1429,17 @@ class OEMHandler(object):
             rsp = json.loads(uploadthread.rsp)
             monitorurl = rsp['@odata.id']
             return self.monitor_update_progress(monitorurl, progress)
-    
+
+    def format_message(self, msg):
+        try:
+            return '{}: {}'.format(msg.get('MessageSeverity', msg['Severity']), msg['Message'])
+        except Exception:
+            return repr(msg)
+
+    def format_messages(self, response):
+        msgs = response.get('Messages', [])
+        return ';'.join(self.format_message(x) for x in msgs)
+
     def monitor_update_progress(self, monitorurl, progress):
             complete = False
             phase = "apply"
@@ -1452,12 +1464,10 @@ class OEMHandler(object):
                 state = pgress[statetype]
                 if state in ('Cancelled', 'Exception', 'Interrupted',
                              'Suspended'):
-                    raise Exception(
-                        json.dumps(json.dumps(pgress['Messages'])))
+                    
+                    raise Exception(self.format_messages(pgress))
                 if 'PercentComplete' in pgress:
                     pct = float(pgress['PercentComplete'])
-                else:
-                    print(repr(pgress))
                 complete = state == 'Completed'
                 progress({'phase': phase, 'progress': pct})
                 if complete: