acquarius.13 Posted October 27, 2021 Share Posted October 27, 2021 Hi everyone, as per title (and in signature), I encountered an issue when my laptop updates the bios: latest bios update was quite mandatory (due to a problem with embedded batteries). I'm able to downgrade it but, at reboot, bios starts again to update to the latest version (01.17) without any possibility to avoid the procedure and to stop it. The issue: this latest bios gives me an acpi battery error and shows me no battery at all in macOS (both 11.6 and 12.0.1 RC2). I'm not at all an expert in acpi patching so I'm here to ask you an hand. I already tried to patch it using SSDtime but with no effect. You can find as attachments the current EFI, the acpi tables extracted with OC 0.7.2 debug, ioregistry file and some screenshots (I have a video of boot verbose, if needed). Hope this can help to understand the issue (and to make you solve it). Thank you so much in advance MacBook Pro di Marco 2018.ioreg.zip EFI.zip SysReport.zip Link to comment Share on other sites More sharing options...
lilgeek Posted December 31, 2021 Share Posted December 31, 2021 Hello have you found a solution to this? I'm facing the same problem now with the same device on the same BIOS version Link to comment Share on other sites More sharing options...
Baio77 Posted January 1, 2022 Share Posted January 1, 2022 https://drive.google.com/drive/folders/1ZaekYwLlCZCDMnZm-9QnfBJQmT8Lu1H7?usp=sharing test this EFI in USB , if start ioreg Link to comment Share on other sites More sharing options...
lilgeek Posted January 2, 2022 Share Posted January 2, 2022 On 1/1/2022 at 7:42 AM, Baio77 said: https://drive.google.com/drive/folders/1ZaekYwLlCZCDMnZm-9QnfBJQmT8Lu1H7?usp=sharing test this EFI in USB , if start ioreg I'm sorry, what exactly am I looking for? The EFI had a long verbose then the screen went black, no files were generated on the usb, nothing. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted January 2, 2022 Moderators Share Posted January 2, 2022 Baio77 was asking you to test the EFI from an USB drive incase it doesn't boot, it won't break your system. Also if it does boot to launch IORegistryExplorer.app, save, compress and attach it here so he could take a look. Link to comment Share on other sites More sharing options...
Baio77 Posted January 2, 2022 Share Posted January 2, 2022 Checking well, I notice graphic IDs NOT suitable for Kabylake Refresh CPUs, I modify the EFI and leave here the new EFI to be tested. The purpose of this EFI is to create a very functional and suitable one for the use of Open Core Bootloader. The EFI that I find on the net for Elitebook or Probook were created for Clover bootloader use, the old Rehabman files must be adapted to the needs of the new bootloader. Opencore does NOT like rename in configplist, best thing is ACPI changes and proper use of IF darwin. New EFI for TEST in USB , if start Ioreg. https://drive.google.com/drive/folders/1ZaekYwLlCZCDMnZm-9QnfBJQmT8Lu1H7?usp=sharing Thank's for all .... Analyzing data at the 1st Post I notice that the trackpad is NOT active. Below the images of ioreg demonstrating that GPI0, I2C0 or I2C1 must be activated. So my develop is a functional EFI for these models. 1 Link to comment Share on other sites More sharing options...
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