The version table of 3dsguide shows that is again the official method to hack consoles with the latest version:
https://3ds.hacks.guide/get-started#version-table
Then, I would say yes.
Yeah. Download the latest v10.2.1 from Luma's Github, unzip and copy (replace) the boot.firm file into the root of your SD card.How do we go about updating everything to the latest?
New 2DS XL
Running Luma3DS 10.2 with B9S 1.3
Do we update the official firmware and then update Luma by deleting the old file and replace with the new one?
TIA.
Or, just download, install and use the "Luma Updater"