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Showing results for tags 'Dell Latitude E6530'.
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I have Dell Latitude E6530 - NVS5200m video card. I had bios version A12. I need to upgrade bios to A13. I red that I need to downgrade to A03 than write A13. After successful downgrade I went to bios to switch SATA to AHCI. After apply this I got black screen. I wait 20 minutest and nothing changed. I turned OFF and On, and laptop didn't boot. I opened case to remove CMOS battery and I saw that battery cords are damaged. I live in small city. There is no Dell service. Local service found image of same laptop model and flashed it directly into bios chip. After this laptop boots normaly. But I can not upgrade or downgrade bios. I have same serial. but other mac address. Now I have wrong bios. OS X don't work. In El Capitan dont work HD4000, in Sierra WIFI and HD4000. Only Windows 10 works good, but...... I need dump of A13 version of bios that I can programm to my chip. I have opportunity to make it in my place. PLS, help me.
