Thank you. Will try formatting the SD card and copy the content back. (Update: Sorry it does not work. Still the 3ds shutdown right after turning on.)
Now i have a question about the CFW. i did a tinyformat on my other old 3ds xl and did not do any backup and now i think the CFW is gone. But the luma and godmode still able to run without the sd card. One thing i notice on the 3ds is that it says on the bottom screen that "booted from CTRNAND via B9S" running on luma3ds v9.0 but on my other 3ds which runs on luma3ds v8.1, it does not have this and more over the menu on the luma3ds v9.0 is lesser than the older one.
Missing is "Autoboot EmuNAND", "Use EmuNAND FIRM if booting with R", "Patch ARM9 access". Previously tries to run safemode/safeboot on godmode but was not able to.
Do i have to reinstall back again the CFW or can i do something about it to make it run back the CFW. Also note i have some problem with the newer mod one as i was not able to install .CIA games thru FBI as some games was not able to be downloaded due to missing header or something like that.
Thank you for your time reading this and sorry if i sounded noob.