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  1. @Rajganesh I'd rather do a clean install than upgrade. But it's up to you. I think it should work.
  2. macOS starts loading, then the screen goes dark. But when you bring a light close to the screen, you can see that the system has loaded normally. After a few minutes the backlight returns to normal. Edit: I managed to solve the problem using bootarg "-igfxblr". Attached is my final EFI. Thanks for the help. EFI.zip
  3. @Jake Lo yes! When i was on Bigsur it happens with the whatever green after version 1.4.5
  4. @Jake Lo It works! But the screen backlight is off when the installation screen loads. Then after a few minutes the backlight comes back on. How do I fix this problem? I managed to install successfully! all that's left is to solve this little problem. Thank you very much in advance.
  5. Hi Guys, i'm trying to install mac os monterey on my latitude 3400, but i'm stucked on "IOG flags 0x3 (0x51)" error. can someone help me? OC.zip
  6. Hi, after a research time, I've got upgrade my oc to 7.4 and fix some problems in my config. now, I have one problem, when I type fast some characters they failed. for example, if I type the A key 5 times fast, just 3 are displayed. I attached my oc folder here. if someone could help me, I'll thank you. OC.zip
  7. @Bronxteck i will remove it. Other problem... I have AlcID=15, but audio is cutting sometimes. What id works better in this case?
  8. @Lorys89 I used Sanity Check to see what was wrong with my config.plist. I made the necessary corrections, the system is starting normally, but before the opencore menu appears, this appears: No schema for adviseWindows at 0 index No schema for advise KeyMErgeTreshold at 8 index No schema for Applevent at 3 index could you help me please
  9. @Hervé I add the flag using propper tree, save changes and reboot. but, when in the system I was checked the boot args and igfxonln=1 disappear.
  10. @Jake Lo I have a new problem. The HDMI works, but when the laptop screen is off after an specific time, pressing any key, the image returns, but HDMI don't return. How I solve this problem?
  11. @Jake Lo I've run the command but i dont know what to do with this. 2021-09-19 15:41:57.458857-0300 localhost powerd[83]: [powerd:sleepWake] Wake reason: "<private>" identity: "<private>" 2021-09-19 15:42:15.375632-0300 localhost kernel[0]: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: XDCI CNVW 2021-09-19 15:42:15.375634-0300 localhost kernel[0]: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: XDCI CNVW 2021-09-19 15:44:36.849637-0300 localhost kernel[0]: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: XDCI CNVW 2021-09-19 15:44:36.849640-0300 localhost kernel[0]: (AppleACPIPlatform) AppleACPIPlatformPower Wake reason: XDCI CNVW @Hervé follow my EFI folder attached here. both thanks in advance. EFI.zip
  12. @Jake Lo I've executed the commands above but the problem is the same, sleep mode dont work. When the computer enter in sleep mode he restarts.
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