Fix XA2, XA2 Plus, XA2 Ultra instructions

Change-Id: Ic0e7a28f83a74b9d2a2f891860f902842853bd79
diff --git a/_sony/sonyxperiaxa2.markdown b/_sony/sonyxperiaxa2.markdown
index 8089245..3e04ca8 100644
--- a/_sony/sonyxperiaxa2.markdown
+++ b/_sony/sonyxperiaxa2.markdown
@@ -21,7 +21,7 @@
 Download the latest zip and install the zip using TWRP.
 
 If you do not already have TWRP installed:
-Download both the img and the zip. You will need to have fastboot binaries and the correct drivers installed. Power off your device completely. Hold volume down and turn on the device. Your device should now be in the bootloader. Connect the device to your PC. Open a command window and run the following command from the proper location:
+Download both the img and the zip. You will need to have fastboot binaries and the correct drivers installed. Power off your device completely. Hold volume up and turn on the device. Your device should now be in the bootloader. Connect the device to your PC. Open a command window and run the following command from the proper location:
 
 fastboot boot path/to/twrp.img
 
diff --git a/_sony/sonyxperiaxa2plus.markdown b/_sony/sonyxperiaxa2plus.markdown
index 271329b..ef2f14f 100644
--- a/_sony/sonyxperiaxa2plus.markdown
+++ b/_sony/sonyxperiaxa2plus.markdown
@@ -21,7 +21,7 @@
 Download the latest zip and install the zip using TWRP.
 
 If you do not already have TWRP installed:
-Download both the img and the zip. You will need to have fastboot binaries and the correct drivers installed. Power off your device completely. Hold volume down and turn on the device. Your device should now be in the bootloader. Connect the device to your PC. Open a command window and run the following command from the proper location:
+Download both the img and the zip. You will need to have fastboot binaries and the correct drivers installed. Power off your device completely. Hold volume up and turn on the device. Your device should now be in the bootloader. Connect the device to your PC. Open a command window and run the following command from the proper location:
 
 fastboot boot path/to/twrp.img
 
diff --git a/_sony/sonyxperiaxa2ultra.markdown b/_sony/sonyxperiaxa2ultra.markdown
index 019436a..31506c4 100644
--- a/_sony/sonyxperiaxa2ultra.markdown
+++ b/_sony/sonyxperiaxa2ultra.markdown
@@ -21,7 +21,7 @@
 Download the latest zip and install the zip using TWRP.
 
 If you do not already have TWRP installed:
-Download both the img and the zip. You will need to have fastboot binaries and the correct drivers installed. Power off your device completely. Hold volume down and turn on the device. Your device should now be in the bootloader. Connect the device to your PC. Open a command window and run the following command from the proper location:
+Download both the img and the zip. You will need to have fastboot binaries and the correct drivers installed. Power off your device completely. Hold volume up and turn on the device. Your device should now be in the bootloader. Connect the device to your PC. Open a command window and run the following command from the proper location:
 
 fastboot boot path/to/twrp.img