Brother RJ-3050 User Manual page 170

How to update P-touch Software
d
Select the [Printer], ensure that [The machine is connected correctly.] is displayed, and then click
[OK].
e
Select the [Language], select the check box next to the firmware to be updated, and then click
[Transfer].
Important
Do not turn off the printer or disconnect the cable while the data is being transferred.
f
Check the content to be updated, and then click [Start] to begin the update.
The software download begins.
Note
Do not turn off the printer during the update process.
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