SOLVED... sort of... A second pass resolved the issue... Thx @cravas for the tip! But PlaySysUpdater fails all the time... If I pass a third time, blue screen, forth time, ir works boots but fails on PlaySysUpdater. So every even time I pass autofirm it blue screens, and every odd times it boots but fails in PlaySysUpdater. ---------------------------------------------- Hello all, Some of you know me for some time. I'm one of the Brazilian hardmodders most of you suggest to ppl seeking out for services around here. The last two weeks I was out and I could not test 11.1 hardmod downgrade so I'm doing it this week. Today a 11.1 N3DS XL came in and I proceeded to downgrade it. - Got two copies of the NAND (they match). - Downloaded latest Plailect's autofirm and the 11.1 to 10.4 N3DS firms. - Started autofirm.bat and make sure I pick 11.1 NEW 3DS/XL. But after the process ended and I flashed the new nand.bin, when I turn on the console all I get is a blue screen with the last line all 0 (which means a bad NAND, as far as I know). The console is indeed 11.1 (I personally updated it online for testing purposes). I'm wondering if someone else ever faced this before? PS: A couple of additional information: 1) When the fake SD is plugged in just the bottom screen turn on with blue screen 2) The board is a "Chinese replacement" 3) eShop works (completely unrelated but I decided to mention) Any thoughts are welcome! EDIT: When I reflash one of the NAND backups the console works again. This proves the NAND backup I have is OK! EDIT 2: I'm tagging @Plailect just in case he decides to shed some light!