Do not waste time buying RCM jigs, downloading payloads, or watching "unpatched XKJ1" YouTube videos (which are almost certainly scams or mislabeled). The XKJ1 prefix is a definitive marker of a post-patch Erista console.
If you type "Is my switch patched" into Google, you will find several serial number checkers (like "IsMySwitchPatched"). While these are useful tools, they have a flaw:
They’d named the Switch Lazarus because they’d bought it “for parts” on eBay. The previous owner had said it was water-damaged. Jamie had fixed it with isopropyl alcohol, a toothbrush, and sheer stubbornness. Lazarus owed them. is my switch patched xkj1
It wasn't a simple “PATCHED” or “UNPATCHED.” That would have been too easy. Instead, a string of hexadecimal code scrolled up, followed by a single, human-readable line:
If you want an unpatched Switch, search eBay or local marketplaces for serial numbers beginning with: Do not waste time buying RCM jigs, downloading
Jamie’s friend Marco had a patched Switch. He’d tried. The console had laughed at him in the form of a black error screen. “You’re out of luck, hermano,” Marco had said. “If your serial starts with XKJ, you’re cooked.”
On the plus side, since it is a v2 model, your console has significantly better battery life compared to the original unpatched v1 units. While these are useful tools, they have a
Nintendo introduced new fuse configurations and bootROM protections in late 2018. Every Switch produced after that specific manufacturing batch (which includes all XKJ1 serials) had the Tegra X1 chip's vulnerable USB recovery mode code replaced with patched code. The XKJ1 prefix indicates a late-stage Erista unit—right before the Mariko refresh.
You can have a modchip (such as a PicoFly or HWFLY) soldered onto the motherboard. This requires precise micro-soldering skills and is usually best handled by a professional. Trade for a V1 Unpatched:
Yes, any Nintendo Switch with a serial number starting with is patched .