diff --git a/interface/src/SignIn.tsx b/interface/src/SignIn.tsx
index 602c44588..b5e4139b1 100644
--- a/interface/src/SignIn.tsx
+++ b/interface/src/SignIn.tsx
@@ -9,6 +9,8 @@ import * as AuthenticationApi from './api/authentication';
 import { PROJECT_NAME } from './api/env';
 import { AuthenticationContext } from './contexts/authentication';
 
+import { AxiosError } from 'axios';
+
 import { extractErrorMessage, onEnterCallback, updateValue } from './utils';
 import { SignInRequest } from './types';
 import { ValidatedTextField } from './components';
@@ -42,9 +44,11 @@ const SignIn: FC = () => {
     try {
       const { data: loginResponse } = await AuthenticationApi.signIn(signInRequest);
       authenticationContext.signIn(loginResponse.access_token);
-    } catch (error: any) {
-      if (error.response?.status === 401) {
-        enqueueSnackbar('Invalid login details', { variant: 'warning' });
+    } catch (error: unknown) {
+      if (error instanceof AxiosError) {
+        if (error.response?.status === 401) {
+          enqueueSnackbar('Invalid login details', { variant: 'warning' });
+        }
       } else {
         enqueueSnackbar(extractErrorMessage(error, 'Unexpected error, please try again'), { variant: 'error' });
       }
diff --git a/interface/src/components/upload/SingleUpload.tsx b/interface/src/components/upload/SingleUpload.tsx
index d58cc890d..f1cb6fb18 100644
--- a/interface/src/components/upload/SingleUpload.tsx
+++ b/interface/src/components/upload/SingleUpload.tsx
@@ -24,13 +24,19 @@ const getBorderColor = (theme: Theme, props: DropzoneState) => {
 export interface SingleUploadProps {
   onDrop: (acceptedFiles: File[]) => void;
   onCancel: () => void;
-  accept?: string | string[];
   uploading: boolean;
   progress?: ProgressEvent;
 }
 
-const SingleUpload: FC<SingleUploadProps> = ({ onDrop, onCancel, accept, uploading, progress }) => {
-  const dropzoneState = useDropzone({ onDrop, accept, disabled: uploading, multiple: false });
+const SingleUpload: FC<SingleUploadProps> = ({ onDrop, onCancel, uploading, progress }) => {
+  const dropzoneState = useDropzone({
+    onDrop,
+    accept: {
+      'application/octet-stream': ['.bin']
+    },
+    disabled: uploading,
+    multiple: false
+  });
   const { getRootProps, getInputProps } = dropzoneState;
   const theme = useTheme();
 
diff --git a/interface/src/components/upload/useFileUpload.ts b/interface/src/components/upload/useFileUpload.ts
index d7d476900..b7529020f 100644
--- a/interface/src/components/upload/useFileUpload.ts
+++ b/interface/src/components/upload/useFileUpload.ts
@@ -43,7 +43,7 @@ const useFileUpload = ({ upload }: MediaUploadOptions) => {
       });
       resetUploadingStates();
       enqueueSnackbar('Upload successful', { variant: 'success' });
-    } catch (error: any) {
+    } catch (error: unknown) {
       if (axios.isCancel(error)) {
         enqueueSnackbar('Upload aborted', { variant: 'warning' });
       } else {
diff --git a/interface/src/contexts/authentication/Authentication.tsx b/interface/src/contexts/authentication/Authentication.tsx
index 93f09b77f..9577fbee4 100644
--- a/interface/src/contexts/authentication/Authentication.tsx
+++ b/interface/src/contexts/authentication/Authentication.tsx
@@ -23,9 +23,9 @@ const Authentication: FC = ({ children }) => {
       const decodedMe = AuthenticationApi.decodeMeJWT(accessToken);
       setMe(decodedMe);
       enqueueSnackbar(`Logged in as ${decodedMe.username}`, { variant: 'success' });
-    } catch (error: any) {
+    } catch (error: unknown) {
       setMe(undefined);
-      throw new Error('Failed to parse JWT ' + error.message);
+      throw new Error('Failed to parse JWT');
     }
   };
 
@@ -49,7 +49,7 @@ const Authentication: FC = ({ children }) => {
         await AuthenticationApi.verifyAuthorization();
         setMe(AuthenticationApi.decodeMeJWT(accessToken));
         setInitialized(true);
-      } catch (error: any) {
+      } catch (error: unknown) {
         setMe(undefined);
         setInitialized(true);
       }
diff --git a/interface/src/contexts/features/FeaturesLoader.tsx b/interface/src/contexts/features/FeaturesLoader.tsx
index e02c3411c..8f412717c 100644
--- a/interface/src/contexts/features/FeaturesLoader.tsx
+++ b/interface/src/contexts/features/FeaturesLoader.tsx
@@ -16,7 +16,7 @@ const FeaturesLoader: FC = (props) => {
     try {
       const response = await FeaturesApi.readFeatures();
       setFeatures(response.data);
-    } catch (error: any) {
+    } catch (error: unknown) {
       setErrorMessage(extractErrorMessage(error, 'Failed to fetch application details.'));
     }
   }, []);
diff --git a/interface/src/framework/network/WiFiNetworkScanner.tsx b/interface/src/framework/network/WiFiNetworkScanner.tsx
index 9f3798f5f..169bc6951 100644
--- a/interface/src/framework/network/WiFiNetworkScanner.tsx
+++ b/interface/src/framework/network/WiFiNetworkScanner.tsx
@@ -1,13 +1,14 @@
 import { useEffect, FC, useState, useCallback, useRef } from 'react';
 import { useSnackbar } from 'notistack';
 
+import { AxiosError } from 'axios';
+
 import { Button } from '@mui/material';
 import PermScanWifiIcon from '@mui/icons-material/PermScanWifi';
 
 import * as NetworkApi from '../../api/network';
 import { WiFiNetwork, WiFiNetworkList } from '../../types';
 import { ButtonRow, FormLoader, SectionContent } from '../../components';
-import { extractErrorMessage } from '../../utils';
 
 import WiFiNetworkSelector from './WiFiNetworkSelector';
 
@@ -52,8 +53,12 @@ const WiFiNetworkScanner: FC = () => {
         newNetworkList.networks.sort(compareNetworks);
         setNetworkList(newNetworkList);
       }
-    } catch (error: any) {
-      finishedWithError(extractErrorMessage(error, 'Problem listing WiFi networks'));
+    } catch (error: unknown) {
+      if (error instanceof AxiosError) {
+        finishedWithError('Problem listing WiFi networks ' + error.response?.data.message);
+      } else {
+        finishedWithError('Problem listing WiFi networks');
+      }
     }
   }, [finishedWithError]);
 
@@ -64,8 +69,12 @@ const WiFiNetworkScanner: FC = () => {
     try {
       await NetworkApi.scanNetworks();
       setTimeout(pollNetworkList, POLLING_FREQUENCY);
-    } catch (error: any) {
-      finishedWithError(extractErrorMessage(error, 'Problem scanning for WiFi networks'));
+    } catch (error: unknown) {
+      if (error instanceof AxiosError) {
+        finishedWithError('Problem scanning for WiFi networks ' + error.response?.data.message);
+      } else {
+        finishedWithError('Problem scanning for WiFi networks');
+      }
     }
   }, [finishedWithError, pollNetworkList]);
 
diff --git a/interface/src/framework/ntp/NTPStatusForm.tsx b/interface/src/framework/ntp/NTPStatusForm.tsx
index 2e0f03957..51182af5f 100644
--- a/interface/src/framework/ntp/NTPStatusForm.tsx
+++ b/interface/src/framework/ntp/NTPStatusForm.tsx
@@ -86,7 +86,7 @@ const NTPStatusForm: FC = () => {
       enqueueSnackbar('Time set', { variant: 'success' });
       setSettingTime(false);
       loadData();
-    } catch (error: any) {
+    } catch (error: unknown) {
       enqueueSnackbar(extractErrorMessage(error, 'Problem updating time'), { variant: 'error' });
     } finally {
       setProcessing(false);
diff --git a/interface/src/framework/security/GenerateToken.tsx b/interface/src/framework/security/GenerateToken.tsx
index e834b9d26..75296c946 100644
--- a/interface/src/framework/security/GenerateToken.tsx
+++ b/interface/src/framework/security/GenerateToken.tsx
@@ -33,7 +33,7 @@ const GenerateToken: FC<GenerateTokenProps> = ({ username, onClose }) => {
   const getToken = useCallback(async () => {
     try {
       setToken((await SecurityApi.generateToken(username)).data);
-    } catch (error: any) {
+    } catch (error: unknown) {
       enqueueSnackbar(extractErrorMessage(error, 'Problem generating token'), { variant: 'error' });
     }
   }, [username, enqueueSnackbar]);
diff --git a/interface/src/framework/system/FirmwareFileUpload.tsx b/interface/src/framework/system/FirmwareFileUpload.tsx
index 8e5a056f3..a0b212fdf 100644
--- a/interface/src/framework/system/FirmwareFileUpload.tsx
+++ b/interface/src/framework/system/FirmwareFileUpload.tsx
@@ -21,7 +21,6 @@ const FirmwareFileUpload: FC<UploadFirmwareProps> = ({ uploadFirmware }) => {
         />
       )}
       <SingleUpload
-        accept=".bin"
         onDrop={uploadFile}
         onCancel={cancelUpload}
         uploading={uploading}
diff --git a/interface/src/framework/system/FirmwareRestartMonitor.tsx b/interface/src/framework/system/FirmwareRestartMonitor.tsx
index 1eef254f9..7dd050c6e 100644
--- a/interface/src/framework/system/FirmwareRestartMonitor.tsx
+++ b/interface/src/framework/system/FirmwareRestartMonitor.tsx
@@ -17,7 +17,7 @@ const FirmwareRestartMonitor: FC = () => {
     try {
       await SystemApi.readSystemStatus(POLL_TIMEOUT);
       document.location.href = '/firmwareUpdated';
-    } catch (error: any) {
+    } catch (error: unknown) {
       if (new Date().getTime() < timeoutAt.current) {
         setTimeoutId(setTimeout(poll.current, POLL_INTERVAL));
       } else {
diff --git a/interface/src/framework/system/SystemLog.tsx b/interface/src/framework/system/SystemLog.tsx
index 7878691f8..9d5413aa6 100644
--- a/interface/src/framework/system/SystemLog.tsx
+++ b/interface/src/framework/system/SystemLog.tsx
@@ -106,7 +106,7 @@ const SystemLog: FC = () => {
         if (response.status !== 200) {
           enqueueSnackbar('Problem applying log settings', { variant: 'error' });
         }
-      } catch (error: any) {
+      } catch (error: unknown) {
         enqueueSnackbar(extractErrorMessage(error, 'Problem applying log settings'), { variant: 'error' });
       }
     }
@@ -158,7 +158,7 @@ const SystemLog: FC = () => {
   const fetchLog = useCallback(async () => {
     try {
       setLogEntries((await SystemApi.readLogEntries()).data);
-    } catch (error: any) {
+    } catch (error: unknown) {
       setErrorMessage(extractErrorMessage(error, 'Failed to fetch log'));
     }
   }, []);
diff --git a/interface/src/framework/system/SystemStatusForm.tsx b/interface/src/framework/system/SystemStatusForm.tsx
index 092ca03ba..62c333fce 100644
--- a/interface/src/framework/system/SystemStatusForm.tsx
+++ b/interface/src/framework/system/SystemStatusForm.tsx
@@ -81,7 +81,7 @@ const SystemStatusForm: FC = () => {
     try {
       await SystemApi.restart();
       enqueueSnackbar('EMS-ESP is restarting...', { variant: 'info' });
-    } catch (error: any) {
+    } catch (error: unknown) {
       enqueueSnackbar(extractErrorMessage(error, 'Problem restarting device'), { variant: 'error' });
     } finally {
       setConfirmRestart(false);
@@ -179,7 +179,7 @@ const SystemStatusForm: FC = () => {
     try {
       await SystemApi.factoryReset();
       enqueueSnackbar('Device has been factory reset and will now restart', { variant: 'info' });
-    } catch (error: any) {
+    } catch (error: unknown) {
       enqueueSnackbar(extractErrorMessage(error, 'Problem factory resetting the device'), { variant: 'error' });
     } finally {
       setConfirmFactoryReset(false);
diff --git a/interface/src/project/HelpInformation.tsx b/interface/src/project/HelpInformation.tsx
index 9790071e9..803f30b83 100644
--- a/interface/src/project/HelpInformation.tsx
+++ b/interface/src/project/HelpInformation.tsx
@@ -48,7 +48,7 @@ const HelpInformation: FC = () => {
         document.body.removeChild(a);
         enqueueSnackbar('File downloaded', { variant: 'info' });
       }
-    } catch (error: any) {
+    } catch (error: unknown) {
       enqueueSnackbar(extractErrorMessage(error, 'Problem with downloading'), { variant: 'error' });
     }
   };
diff --git a/interface/src/project/SettingsApplication.tsx b/interface/src/project/SettingsApplication.tsx
index 2213634ac..0ea86722b 100644
--- a/interface/src/project/SettingsApplication.tsx
+++ b/interface/src/project/SettingsApplication.tsx
@@ -64,7 +64,7 @@ const SettingsApplication: FC = () => {
           eth_clock_mode: response.data.eth_clock_mode
         });
       }
-    } catch (error: any) {
+    } catch (error: unknown) {
       enqueueSnackbar(extractErrorMessage(error, 'Problem fetching board profile'), { variant: 'error' });
     } finally {
       setProcessingBoard(false);
@@ -103,7 +103,7 @@ const SettingsApplication: FC = () => {
       try {
         await EMSESP.restart();
         enqueueSnackbar('EMS-ESP is restarting...', { variant: 'info' });
-      } catch (error: any) {
+      } catch (error: unknown) {
         enqueueSnackbar(extractErrorMessage(error, 'Problem restarting device'), { variant: 'error' });
       }
     };
diff --git a/interface/src/utils/endpoints.ts b/interface/src/utils/endpoints.ts
index 86265b0a5..24d88fe1e 100644
--- a/interface/src/utils/endpoints.ts
+++ b/interface/src/utils/endpoints.ts
@@ -1,4 +1,10 @@
 import { AxiosError } from 'axios';
 
-export const extractErrorMessage = (error: AxiosError, defaultMessage: string) =>
-  (error.response && error.response.data ? error.response.data.message : error.message) || defaultMessage;
+export const extractErrorMessage = (error: unknown, defaultMessage: string) => {
+  if (error instanceof AxiosError) {
+    return error.response && error.response.data && error?.response?.data?.message;
+  } else if (error instanceof Error) {
+    return error.message;
+  }
+  return defaultMessage;
+};
diff --git a/interface/src/utils/useRest.ts b/interface/src/utils/useRest.ts
index ca948d0ec..e889e4521 100644
--- a/interface/src/utils/useRest.ts
+++ b/interface/src/utils/useRest.ts
@@ -22,7 +22,7 @@ export const useRest = <D>({ read, update }: RestRequestOptions<D>) => {
     setErrorMessage(undefined);
     try {
       setData((await read()).data);
-    } catch (error: any) {
+    } catch (error: unknown) {
       const message = extractErrorMessage(error, 'Problem loading data');
       enqueueSnackbar(message, { variant: 'error' });
       setErrorMessage(message);
@@ -45,7 +45,7 @@ export const useRest = <D>({ read, update }: RestRequestOptions<D>) => {
         } else {
           enqueueSnackbar('Settings saved', { variant: 'success' });
         }
-      } catch (error: any) {
+      } catch (error: unknown) {
         const message = extractErrorMessage(error, 'Problem saving data');
         enqueueSnackbar(message, { variant: 'error' });
         setErrorMessage(message);