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Hi! Can someone help me step by step how to upgrade Sierra to High Sierra? Thank you for your answers!

You might have something more ideas?

Also, I tried to edit the DSDT know this is what you sent. MaciASL unfortunately could not open ...

Unfortunately, the situation remains the same. Wifi works in theory, but unfortunately networks still do not see ...

Hello, Thank you very much for your great help! I could even help to start doing what I can to make mistakes?

Thanks for the help!!! Archívum.zip

Perhaps you could help me in some descriptions? Unfortunately, it seems that I can not do it now ...

Perhaps you could help me a little bit more? Unfortunately, this now so I could not understand ...

Accordingly, you should go. The settings can also see a WiFi device, but unfortunately did not see any WiFi network! ... Someone could possibly do to help?

Thank you very much for the previous answers. We managed to install the course of a day yesterday, all works beautifully, except for wifi. Written forums that I use DW-1550 WiFi is unfortunately just not at liberty to buy Such tools. However, there is a handy DW-1502's, it was a question of whether this should work under the Sierra? Thank you for your help! Welcome, Balázs Soos

Hi, Thank you very much for your help so far, almost all succeeded! If you do not care, now I'd give a quick description of how I installed it to see if anyone comes to see what is wrong ... The installation is done by: https://osxlatitude.com/index.php?/topic/8506-dell-latitude-inspiron-precision-clover-guide/ Part 1 USB setup was not creating a problem. The USB installer to create a "Clover_v2.4k_r4003" was used. The contents of the folder Clover I changed the content can be found at 37 Clover folder contained herein. Part 2 installation was no problem. The problems began in the third section! I installed the above mentioned Clover v2.4 r4003 EFI Mounter I did everything v3 EFI kext folder and copied files from USB Terminal I run the specified command TouchPad settings are empty! I can not produce anything! (Picture attached) Point 10 to the beginning everything was fine, but it could be the end, I am not well done! "Execute ssdtPRGen.sh from terminal (Included in Tools attached below) Place SSDT.aml generated in / EFI / Clover / ACPI / Patched " At this point, I opened a terminal SSDT.aml Tools folder file on your terminal opened in pushing through Y when asked. The "Desktop" generated files are copied to the specified location (ie / EFI / Clover / ACPI / Patch) In addition, I found the TouchPad on which one has not worked something. When it started the machine, you will start to Clover, I click on it the Macintosh SSD, but unfortunately nothing happens only black screen is ... If someone's idea would be looking forward to your answers! Welcome, Balázs Soos

Hello, You've seen the attached image problem occurs during installation. Component: Dell Latitude E7440 Mac OS X Sierra Clover 3998 Anyone have any ideas?

Dear Members, I would like to ask for comprehensive assistance in connection with installation. It has been long since I read in connection with OSX installation, was also factory MacBook which I loved, but unfortunately because of work I had to stay in a Dell Latitude E7440 facility. Unfortunately, I'm not so good at English either, but if you could get a detailed description thereof will be sure to bring together! I would like to ask for a help, someone would describe in detail the deployment of the Sierra E7440 offer, but if there's a way you can so that you can install with drivers. I would be very grateful for it, I'd even pay for itself halylandó such a detailed description! Thanks in advance for everyone's help! Welcome, Balázs Soos