{"id":16369,"date":"2018-12-12T07:54:03","date_gmt":"2018-12-12T06:54:03","guid":{"rendered":"http:\/\/xiaomimobile.cz\/blog\/?p=16369"},"modified":"2018-12-12T07:57:03","modified_gmt":"2018-12-12T06:57:03","slug":"mi-a2-mi-a2-lite-mi-a1-oreo","status":"publish","type":"post","link":"https:\/\/xm.cz\/blog\/mi-a2-mi-a2-lite-mi-a1-oreo\/","title":{"rendered":"Xiaomi Mi A2, Mi A2 Lite a Mi A1 nelze z Androidu 9 Pie vr\u00e1tit na Oreo"},"content":{"rendered":"<p>Telefony <b>Xiaomi Mi A2, Mi A2 Lite a Mi A1<\/b> dost\u00e1vaj\u00ed o\u010dek\u00e1vanou aktualizaci na nejnov\u011bj\u0161\u00ed Android 9 Pie. Pro v\u011bt\u0161inu majitel\u016f je to dobr\u00e1 zpr\u00e1va &#8211; posledn\u00ed verze syst\u00e9mu p\u0159in\u00e1\u0161\u00ed celou \u0159adu nov\u00fdch funkc\u00ed a vylep\u0161en\u00ed. M\u00e9n\u011b pozitivn\u00ed v\u0161ak je, \u017ee pokud se pokus\u00edte ud\u011blat downgrade na Android 8 Oreo, naraz\u00edte. Takzvan\u00fd \u201erollback\u201c nen\u00ed mo\u017en\u00fd.<\/p>\n<p>Modelov\u00e1 \u0159ada Mi A je sou\u010d\u00e1st\u00ed projektu <b>Android One<\/b>. V jeho r\u00e1mci v\u00fdrobci nab\u00edzej\u00ed sv\u00e9 telefony s \u010dist\u00fdm opera\u010dn\u00edm syst\u00e9mem bez jak\u00fdchkoli nadstaveb. V na\u0161em e-shopu nab\u00edz\u00edme oba aktu\u00e1ln\u00ed modely: <a href=\"https:\/\/xm.cz\/xiaomi-mi-a2-cerna-4-32-gb\" target=\"_blank\" rel=\"noopener\">Mi A2<\/a>, jeho\u017e cena za\u010d\u00edn\u00e1 na 4560 K\u010d, a <a href=\"https:\/\/xm.cz\/xiaomi-mi-a2-lite-modra-3-32-gb\" target=\"_blank\" rel=\"noopener\">Mi A2 Lite<\/a>, startuj\u00edc\u00ed na cen\u011b 3990 K\u010d.<\/p>\n<h2>Na Oreo se nevr\u00e1t\u00edte!<\/h2>\n<p>V\u00fdhodou t\u011bchto telefon\u016f je <b>\u010dist\u00fd Android<\/b>, d\u00edky \u010demu\u017e m\u016f\u017ee v\u00fdrobce rychleji vyd\u00e1vat aktualizace na posledn\u00ed verze. To plat\u00ed u v\u0161ech t\u0159\u00ed telefon\u016f: Mi A1, Mi A2 a Mi A2 Lite ji\u017e (postupn\u011b) dost\u00e1vaj\u00ed update na aktu\u00e1ln\u00ed Android 9 Pie.<\/p>\n<p>V pond\u011bl\u00ed se <a href=\"http:\/\/en.miui.com\/thread-4838429-1-1.html\" target=\"_blank\" rel=\"noopener\">na ofici\u00e1ln\u00edch str\u00e1nk\u00e1ch Xiaomi<\/a> objevilo d\u016fle\u017eit\u00e9 ozn\u00e1men\u00ed. V p\u0159\u00edpad\u011b, \u017ee na uveden\u00fdch telefonech prob\u011bhne aktualizace na Android 9 Pie, <b>nen\u00ed ji\u017e mo\u017en\u00e9 telefon vr\u00e1tit na p\u0159edchoz\u00ed verzi Android 8 Oreo<\/b>. Nehraje p\u0159itom roli, zda posledn\u00ed verzi syst\u00e9mu flashnete, nebo na ni p\u0159ejdete d\u00edky aktualizaci.<\/p>\n<figure id=\"attachment_16374\" aria-describedby=\"caption-attachment-16374\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-16374\" src=\"http:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1-1024x576.jpg\" alt=\"Telefony Xiaomi Mi A1, A2 a A2 Lite nelze vr\u00e1tit na Oreo\" width=\"800\" height=\"450\" srcset=\"https:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1-1024x576.jpg 1024w, https:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1-300x169.jpg 300w, https:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1-768x432.jpg 768w, https:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1-50x28.jpg 50w, https:\/\/xm.cz\/blog\/wp-content\/uploads\/2018\/12\/Telefony-Xiaomi-Mi-A1-A2-a-A2-Lite-nelze-vr\u00e1tit-na-Oreo-1.jpg 1280w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-16374\" class=\"wp-caption-text\">Telefony Xiaomi Mi A1, A2 a A2 Lite nelze vr\u00e1tit na Oreo<\/figcaption><\/figure>\n<p>D\u016fvodem je, \u017ee Android 9 Pie p\u0159in\u00e1\u0161\u00ed <b>\u0159adu nevratn\u00fdch zm\u011bn<\/b>. P\u0159\u00edpadn\u00fd n\u00e1vrat na p\u0159edchoz\u00ed verzi syst\u00e9mu by zp\u016fsobil probl\u00e9my, je\u017e by se projevovaly \u0159adou chyb, kter\u00e9 mohou m\u00edt vliv na norm\u00e1ln\u00ed fungov\u00e1n\u00ed za\u0159\u00edzen\u00ed.<\/p>\n<p>Na druhou stranu nutno podotknout, \u017ee posledn\u00ed verze syst\u00e9mu p\u0159in\u00e1\u0161\u00ed \u0159adu novinek a vylep\u0161en\u00ed. Jmenovat m\u016f\u017eeme nap\u0159\u00edklad du\u00e1ln\u00ed VoLTE, FM r\u00e1dio, funkci adaptivn\u00ed baterie, adaptivn\u00ed jas, nov\u00e1 naviga\u010dn\u00ed gesta a dal\u0161\u00ed.<\/p>\n<h2>Anti Rollback v praxi<\/h2>\n<p>Situace p\u0159ipom\u00edn\u00e1 zpr\u00e1vu z poloviny z\u00e1\u0159\u00ed, podle kter\u00e9 telefony <a href=\"https:\/\/xm.cz\/blog\/redmi-note-5-a-redmi-note-5-pro\/\" target=\"_blank\" rel=\"noopener\">Redmi Note 5 a Redmi Note 5 Pro nelze vr\u00e1tit na star\u0161\u00ed verzi Androidu<\/a>. Novinka p\u0159i\u0161la s Androidem 8.0 Oreo, kam Google implementoval funkci <b>Anti Rollback<\/b>, kter\u00e1 se star\u00e1 o to, aby nebylo mo\u017en\u00e9 p\u0159ej\u00edt na ni\u017e\u0161\u00ed verzi syst\u00e9mu.<\/p>\n<p>B\u011b\u017en\u00fdch u\u017eivatel\u016f se tato novinka patrn\u011b nedotkne. P\u0159eci jen <b>proveden\u00ed downgrade neb\u00fdv\u00e1 \u00fapln\u011b jednoduch\u00e9<\/b>, tak\u017ee se do n\u011bj pou\u0161t\u011bli jen ti pokro\u010dilej\u0161\u00ed (a odv\u00e1\u017en\u011bj\u0161\u00ed). V p\u0159\u00edpadech, kdy se operace nepovedla, z\u016fstal telefon v nefunk\u010dn\u00edm stavu a mohl slou\u017eit maxim\u00e1ln\u011b tak jako t\u011b\u017e\u00edtko.<\/p>\n<p>Obecn\u011b lze \u0159\u00edci, \u017ee n\u00e1vrat k p\u0159edchoz\u00ed verzi syst\u00e9mu Android (takzvan\u00fd \u201erollback\u201c) <b>nelze doporu\u010dit<\/b>, a to zejm\u00e9na s ohledem na bezpe\u010dnost. Nejnov\u011bj\u0161\u00ed syst\u00e9m v\u017edy obsahuje aktualizace a \u201ezalepuje\u201c bezpe\u010dnostn\u00ed nedostatky, zat\u00edmco star\u0161\u00ed verze ji\u017e neb\u00fdv\u00e1 v\u00fdrobcem udr\u017eov\u00e1na. Je tedy i v z\u00e1jmu u\u017eivatele m\u00edt v\u017edy v telefonu posledn\u00ed dostupnou verzi.<\/p>\n<p style=\"text-align: center;\"><b>Co \u0159\u00edk\u00e1te na to, \u017ee z Androidu 9 Pie nebude mo\u017en\u00fd downgrade na Oreo?<\/b><\/p>\n<p><i>Zdroje: <a href=\"https:\/\/xiaomiadvices.com\/xiaomi-confirms-android-9-pie-update-for-mi-a2-mi-a1-and-mi-a2-lite-doesnt-support-rollback\/\" target=\"_blank\" rel=\"noopener\">xiaomiadvices.com<\/a>, <a href=\"http:\/\/en.miui.com\/thread-4838429-1-1.html\" target=\"_blank\" rel=\"noopener\">en.miui.com<\/a>.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Telefony Xiaomi Mi A2, Mi A2 Lite a Mi A1 dost\u00e1vaj\u00ed o\u010dek\u00e1vanou aktualizaci na nejnov\u011bj\u0161\u00ed Android 9 Pie. Pro v\u011bt\u0161inu<\/p>\n","protected":false},"author":3,"featured_media":16376,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[10],"tags":[1145,997,366,787,864,365,786,863],"class_list":["post-16369","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novinky","tag-android-8-oreo","tag-android-9-pie","tag-mi-a1","tag-mi-a2","tag-mi-a2-lite","tag-xiaomi-mi-a1","tag-xiaomi-mi-a2","tag-xiaomi-mi-a2-lite"],"wppr_data":{"cwp_meta_box_check":"No"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Xiaomi Mi A2, Mi A2 Lite a Mi A1 nelze z Androidu 9 Pie vr\u00e1tit na Oreo<\/title>\n<meta name=\"description\" content=\"Xiaomi Mi A2, Mi A2 Lite a Mi A1 dost\u00e1vaj\u00ed o\u010dek\u00e1vanou aktualizaci na nejnov\u011bj\u0161\u00ed Android 9 Pie. 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