Just remember:
Unzip the downloaded firmware and copy all files (usually includes folders like and files like _DS_MENU.DAT ) directly to the of the MicroSD card. Bypass Timebombs: r4 sdhc dual core 2016 firmware download
Regarding the firmware download, I was able to find some information: Just remember: Unzip the downloaded firmware and copy
For cards from r4isdhc.com, the most compatible official kernel is often version 4.3 or higher. r4 sdhc dual core 2016 firmware download