Won't work anymore.
What CFW are you using? o3DS or n3DS?
If you are still using Pasta CFW you will want to set up an emuNAND and switch to rxTools, that way you can keep a copy of the 3DS firmware on the SD card (called emuNAND) that you can update to the latest version (as long as you are on o3DS, n3DS is 9.5 max) and access the eShop like normal. On a n3DS eShop access is slightly more complicated but still possible.