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What is the card brand? You need to take a look at the memory manufacturer and the die identification (it's labeled on the GPU die). Try to find an vBIOS model on TechPowerUP's website that matches the memory brand/model of you card. These chinese RX580 can change a lot from card to card. Sometimes the die is from an RX470, other times is from an RX570. Use the pbec app (this app) if you're on macOS and need to look at the vBIOS info. These are the info etched on the GPU die and the card that it belongs: 215-0876204 = RX 470 215-0876406 = RX470 Mining 215-0876184 = RX480 215-0910052 = RX570 215-0910038 = RX580 Use this info to look for the appropriate vBIOS for your card. The Sapphire RX 570 vBIOS works with most of the cards i've tested. Sometimes, as the port layout changes from card to card, some outputs may not work. On another modded chinese RX580 i lost two DisplayPort outputs. If none of those works, I suggest you to use some hex editor to try and change the vendor-id value. Dont forget to validate the modded bios on Polarios BIOS Editor, as the CRC of the modded file is invalid.

I was about to give up on this one, but the biosmod saved this GPU. I was really going to exchange for an R9 290 4GB (which needs spoofing anyway). The trick is to mod the extracted bios from your own RX 580 2048SP and change some strings to match the model and device id values of the real chip used in your card. You will need to disassemble the card to look at the GPU die to check the chip model. On Overclock.net there's this topic all about RX480/RX580 modding and such, which helped me A LOT in editing the vBIOS hex file. What works: Sleep (it doesn't suspend to disk because of motherboard limitations, allowing S3 sleep only). Full QE/CI acceleration. Full power management (0.8GHz to 4.0GHz). GPU power management and stats. Apple DRM (FairPlay 1.x & 2.x tested). Apple Services (iCloud, iMessage, etc). HDR on DisplayPort output (tested on an Ozone DSP24). AppleVTD (Intel VT-d enabled on BIOS with DisableIoMapperMapping option enabled on OC, no crashes or network losing connectivity till now). Sound on HDMI, back panel and front panel, including mic. What doesnt't works: Integrated CPU Video (Intel HD 4600 got no driver support on Ventura without OCLP patches). WLAN/Bluetooth (Mobo has only one x1 slot which is covered by the GPU, so no place to connect the adapter) Specs: Stock Intel i7-4790 non-K. Diebold B85H3-M5 (a rebrand of the ECS B85H3-M5 sold in the brazilian market). Realtek RTL8111EPV Ethernet. Kingston 16GB DDR3 1600MHz. AFOX (another brazilian brand) RX 580 8GB 2048SP biosmodded to an real RX 570 8GB. 1x Crucial CX500 256GB as boot disk, 3x Micron 256GB running on software raid on macOS, all SATA3. Thanks!

Here's the patches I've applied so far. Thanks!

macOS Monterey was a breeze to install on this PC, gave macOS Ventura a try and, even if this is a Skylake processor, the GPU patching process went super smooth too! Full QE/CI even on older hardware (HD530). Thanks mald0n for the kexts provided on this link, the final versions of OpenCore, WhateverGreen and Lilu were not working for me and I had to get the beta versions for them, otherwise the boot process would freeze on apfs_module_start error. Basically everything works, including iCloud integration, beta features from Ventura, Wifi, Bluetooth, Power Management, etc, no crashes or freezes until now. Spec-wise, this little 1L PC packs a Intel Core i5-6500 (this unit comes with an 35W version Core i5, but if you grab an 90W power brick you can use the 65W Core i5 without any restrictions), 16GB of 2133MHz RAM, a Western Digital 250GB SATA SSD and a Fenvi BCM94360NG card (no patching was required for this card to work). Some patching was needed for the Intel Graphics 530 to work properly, these involved device-id, AAPL,ig-platform-id, and framebuffer patches, Kaby Lake drivers mostly works with the older Skylake graphics architecture. Metal 3 API seems to work nicely too. Thanks!

Desculpa estar revivendo a thread, mas qual versao do IntelBluetoothFirmware.kext voce esta usando? Tentei diversas combinacoes mas tudo que o relatorio de sistema me mostrava era uma placa broadcom e com o MAC nulo. A placa que tem nesse lenovo e uma Intel AX201, infelizmente soldada na placa.

Alredy checked, unfortunately there's no available patch for this specific model in the rehabman's repo. Been searching a while on the internet about this model but people tend to use mostly the newer EliteBooks (like the 840 G3 I did earlier). I also tried to apply some generic patches available in the repo (mostly for the ProBook 4x0) but no success 'till now.

Hi all! Thanks to @MaLd0n and this entire forum I've manage to make an EliteBook Folio 1020G1 boot and work flawlessly on Big Sur. Everything (Wi-Fi, Bluetooth, trackpad, HDMI, etc) but the battery indicator works. Actually I only need some more guidance patching the EC fields correctly. All of them where converted to 8-bit values, so I'm a bit confused why it's not working. I've attached the .dsl and the RunMe.app folder, too! Thanks! SSDT-1020G1b.dsl

Hi all! Thanks to this forum I've managed to make an 840 G3 boot Big Sur, including the Intel Wireless and Bluetooth. I know there's a ton of prebuilt EFI folders for this model, but making it work from 0 to fully functional is waaaay better. Everything works (sleep, trackpad gestures, HiDPI patch, 3D acceleration, etc), haven't tested FileVault yet. Again, thanks for the enormeous help!

Got everything working on an EliteBook 1020 G1 (including out-of-box audio) but no battery indicator. Made the migration from Clover to OpenCore 0.6.5, but battery indicator stopped working. Link from the output of RunMe.App is below: https://drive.google.com/file/d/1FCT439QvGQsB8QOgjYHsTe3hlaMjZMm2/view?usp=sharing Thanks!