[SOLVED] A strange situation happened to me this morning: After performing the Nand Original Backup 3 times per warranty, check the MD5HASH of all of them, I successfully completed Nand Patched (autofirm). The Console was booting normally. During the downgrade process, there was an error with one of the .cias, even after safesysupdater successfully checked all "updates" folder. After that the console booted with the following message: Blue screen: 02f800fe ffffffff ffffffff 00000022 00000000 - As the console is with Hardmod Installed, my first instinct was to write to Nand Patched (10.0.4 autofirm) again. It worked, for a few seconds, yet the console gave the error: Error Message: An Error Has Occurred. Hold Down the POWER Button, 30 seconds after starting. - After that it stays on blue screen, even SD connected or SD reader connected to the "Franken SD" I have already tried to write the Original Nand (11.2.35 U) and nothing ... Same BOSD ( 02f800fe ffffffff ffffffff 00000022 00000000 ) What the fuck did you do in this situation? ( Im so sorry pals... Without realizing I posted in the tutorial session, it was careless, as I was reading forum topics and multiple browser windows. ) Updates: [SOLVED] - The problem was caused by small solder particles that came off in the welding process, closing short on the NAND microcontroller, causing a poor reading of the data by the console. The problem was solved with a cleaning by removing the pieces of weld from the microcontroller with the help of a fine needle and isopropyl alcohol. After that NAND can be read by the console normally, with no problem later. (There was no BSOD later) Thanks to all the users of POST for the help, and God also gave the lighting to solve the problem. @el_gonz87 , can you help-me?