firmware/bootloaderInstructions/translations: Add prepare section.

Since there are up to three things to prepare, it is better to start the
list with that. We can still keep a separate section for points that match the video.

src/firmware/bootloaderInstructions/BootloaderInstructions.tsx

@@ -192,18 +192,38 @@ const BootloaderInstructions: React.VoidFunctionComponent<
 
             <div className="pb-spacer" />
 
-            <p>
-                {i18n.translate('instruction', {
-                    startPoweredOff: hubHasUSB(hubType)
-                        ? i18n.translate('startPoweredOff.usb')
-                        : recovery
-                        ? i18n.translate('startPoweredOff.recovery', {
-                              lego: legoRegisteredTrademark,
-                          })
-                        : i18n.translate('startPoweredOff.default'),
-                })}
-            </p>
+            <p>{i18n.translate('prepare.start')}</p>
             <ol>
+                {hubHasUSB(hubType) ? (
+                    <>
+                        <li>{i18n.translate('prepare.usb')}</li>
+                        <li>{i18n.translate('prepare.turnOff')}</li>
+                    </>
+                ) : (
+                    <>
+                        {recovery ? (
+                            <>
+                                <li>
+                                    {i18n.translate('prepare.batteries')}{' '}
+                                    {i18n.translate('prepare.turnOff')}
+                                </li>
+                                <li>
+                                    {i18n.translate('prepare.app', {
+                                        lego: legoRegisteredTrademark,
+                                    })}
+                                </li>
+                            </>
+                        ) : (
+                            <>
+                                <li>{i18n.translate('prepare.batteries')}</li>
+                                <li>{i18n.translate('prepare.turnOff')}</li>
+                            </>
+                        )}
+                    </>
+                )}
+            </ol>
+            <p>{i18n.translate('step.start')}</p>
+            <ol start={3}>
                 {/* City hub has power issues and requires disconnecting motors/sensors */}
                 {hubType === Hub.City && (
                     <li

src/firmware/bootloaderInstructions/translations/en.json

@@ -1,33 +1,35 @@
 {
     "warning": {
-        "linux": "If you have never used Pybricks with USB on Linux, you will need to configure udev rules to allow permission before you can flash the hub firmware.",
+        "linux": "If you have never used Pybricks with USB on Linux, you will need to configure udev rules before you can install the firmware.",
         "windows": " If you have never used Pybricks with USB on Windows, you may need to manually install a USB driver before you can flash the hub firmware.",
         "learnMore": "Learn more."
     },
-    "instruction": "To flash the firmware, the hub must be placed in bootloader mode. {startPoweredOff}, then follow the instructions below:",
-    "startPoweredOff": {
-        "default": "Start with the hub powered off",
-        "usb": "Start with the hub powered off and the USB cable disconnected",
-        "recovery": "Start with the hub powered off and the {lego} PoweredUp app opened to any 'Create' program"
+    "prepare": {
+        "start": "Now place the hub in update mode. To prepare:",
+        "batteries": "Make sure the hub has fresh batteries.",
+        "turnOff": "Make sure the hub is turned off.",
+        "usb": "Disconnect the USB cable.",
+        "app": "Open the {lego} PoweredUp app in 'Create' mode and start a new project."
     },
     "button": {
         "bluetooth": "Bluetooth button",
-        "power": "power button"
+        "power": "button"
     },
     "light": {
         "bluetooth": "Bluetooth light",
-        "status": "hub status light"
+        "status": "hub light"
     },
     "lightPattern": {
         "bluetooth": "pink-green-blue-off",
         "status": "light purple"
     },
     "step": {
-        "disconnectIo": "Disconnect all motors and sensors from the I/O ports on the hub.",
+        "start": "Now follow these steps:",
+        "disconnectIo": "Disconnect any device from port A on the hub.",
         "holdButton": "Press and hold the {button} on the hub.",
         "connectUsb": "Connect the USB cable.",
-        "waitForLight": "Keep holding the {button} and wait for the {light} to start flashing {lightPattern}. This takes about 5 seconds.",
-        "waitAppConnect": "The app will automatically connect and start flashing the firmware.",
+        "waitForLight": "Wait for the {light} to start blinking {lightPattern}.",
+        "waitAppConnect": "The app will automatically connect and start restoring the firmware.",
         "releaseButton": "Release the {button}.",
         "keepHolding": "Keep holding the {button}."
     }

src/firmware/installPybricksDialog/translations/en.json

@@ -53,7 +53,7 @@
         }
     },
     "bootloaderPanel": {
-        "title": "Place hub in bootloader mode",
+        "title": "Enter update mode",
         "instruction2": "Then click the {flashFirmware} button below to connect to the hub and flash the firmware."
     },
     "backButton": {