Miguel-1964 Posted February 4 Share Posted February 4 Hello, I am the owner of an HP 250 G6 laptop with I5-7200U 12GB HD i620 (graphics) with Big Sur installed but now I am looking for an EFI for my laptop but I cannot find one even though it is Kaby Lake. Is there anyone who has it here? Thanks and regards. PS: I put my EFI here. EFI BIG SUR 1 Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 5 Administrators Share Posted February 5 Your Big Sur EFI should be able to boot Ventura without issues. Sonoma probably too. Just make sure to update your kexts and bootloader to latest versions. 1 Link to comment Share on other sites More sharing options...
Miguel-1964 Posted February 5 Author Share Posted February 5 Thanks for the response but being a 60-year-old total noob and novice, I have no idea how to do that since I got that EFI from a Github. Any ideas or help for this? Thank you so much. This is an error message with [AHCI] in Ventura, is a loop. Efi com from Olarilla for Kaby Lake laptops. AHCI Loop Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 6 Moderators Share Posted February 6 try EFI from here 1 Link to comment Share on other sites More sharing options...
Baio77 Posted February 6 Share Posted February 6 Unfortunately I no longer have this PC in my hands. I generated new ACPI files for compatibility with the new Bios, but Ventura and Sonoma I was unable to install them for users I followed. I hope to get this PC back soon so I can fix this problem. 1 Link to comment Share on other sites More sharing options...
Miguel-1964 Posted February 6 Author Share Posted February 6 9 hours ago, Baio77 said: Unfortunately I no longer have this PC in my hands. I generated new ACPI files for compatibility with the new Bios, but Ventura and Sonoma I was unable to install them for users I followed. I hope to get this PC back soon so I can fix this problem. Thanks, in the meantime I have to settle for Big Sur, that's why the other day I asked if there was another EFI on your channel, but now with the new HP Bios they no longer install any of Maldon nor do their EFIs work for me. Additionally, HP does not allow you to downgrade the bios to a previous version. 11 hours ago, Jake Lo said: try EFI from here That's the EFI I have in Big Sur. And in Monterey it doesn't work since it doesn't recognize hard drives. And I'm a newbie and I don't have any idea how this is going, I'm 60 years old and this is a bit out of my mind. Thank you. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 7 Moderators Share Posted February 7 try adding this kext CtlnaAHCIPort.kext.zip Link to comment Share on other sites More sharing options...
Miguel-1964 Posted February 7 Author Share Posted February 7 Testing... Kernel Panic... Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 11 Moderators Share Posted February 11 Did you input it into the config file too? Not just to the kexts folder Same KP? Link to comment Share on other sites More sharing options...
Miguel-1964 Posted February 11 Author Share Posted February 11 (edited) Yes i put kext in kext folder and in Config.plist mark on This is strange, before i update my bios from F-42 to F-74, i can install any OS but now only with bios F-74 Big Sur. All my EFI come frome Maldon or Olarilla. Thank you for your interest and for all. Update: I have tried updating from Big Sur to Ventura but when I start I get kernel errors and many other things. Nothing, I leave it as an impossible cause since I cannot put the bios that I had before on the laptop: F-42. Greetings. Edited February 12 by Miguel-1964 Update. Link to comment Share on other sites More sharing options...
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