Yog tias koj nyuam qhuav hloov kho koj lub iPhone, iPad, lossis iPod kov mus rau qhov tseeb version ntawm iOS thiab ntxub nws, koj yuav xav paub yuav ua li cas downgrade iOS mus rau ib qho ua ntej version. Thaum downgrading yog ua tau, nws kuj yog ib qho nyuaj, yog li koj xav kom koj tsis txhob poob tej ntaub ntawv thaum koj downgrade los ntawm ib tug version ntawm iOS mus rau lwm. Nov yog yam koj yuav tsum paub.
Kab lus no tau sau siv iOS 13, tab sis nws kwv yees siv rau lwm yam tsis ntev los no ntawm iOS. Ntawm cov ntawv qub, cov kauj ruam yuav tsum yog tib yam, tab sis cov npe ntawm cov ntawv qhia zaub mov yuav txawv.
Vim li cas koj thiaj xav Downgrade iOS
Koj yuav xav txo qis los ntawm ib qho ntawm iOS mus rau ib qho qub rau ob peb yam, suav nrog:
- Bugs: Tus tshiab version yuav muaj kab laum uas ua rau koj lub cuab yeej iOS nyuaj siv. Tej zaum koj yuav xav downgrade mus rau yav dhau los, tsawg-buggy version thiab tos cov kab kom kho ua ntej hloov kho dua.
- Unwelcome Changes: Cov tshiab iOS no qee zaum qhia txog kev hloov pauv tseem ceeb rau tus neeg siv interface lossis nta. Kev txo qis yog qhov txaus siab yog tias koj tsis nyiam cov kev hloov pauv no lossis cuam tshuam nrog qhov koj xav siv koj lub cuab yeej.
- Slow: Yog tias koj tau txais lub xov tooj qub, txhim kho iOS hloov tshiab tshiab tuaj yeem ua rau koj lub xov tooj mob qeeb. Nyob rau hauv tas li ntawd, tus tshiab version tsis tsim nyog nws, thiab koj yuav xav rov qab mus.
Dab tsi tau txais nyob rau hauv txoj kev ntawm Downgrading iOS
Kev txo qis iOS muaj nws qhov kev thov rov hais dua, tab sis nws tsis yog ib txwm ua ncaj ncees. Feem ntau, qhov zoo tshaj plaws uas koj tuaj yeem ua tau yog downgrade rau version koj nyuam qhuav upgraded los ntawm, tab sis txawm li ntawd los, koj tsuas tuaj yeem ua qhov no rau lub sijhawm luv luv.
Yog koj xav txo qis, koj yuav tsum ua tam sim ntawd, lossis koj yuav plam koj lub sijhawm.
Yog vim li cas qhov no tau ua nrog Apple ruaj ntseg nws cov kev khiav haujlwm li cas. Thaum koj hloov kho lossis txo qis iOS, koj lub cuab yeej hu rau Apple lub servers kom ntseeg tau tias koj tab tom txhim kho qhov hloov tshiab, uas ua rau pom tseeb tias iOS version yog digitally "kos npe" los ntawm Apple. Yog tias nws tsis tau kos npe, koj yuav tsis tuaj yeem nruab qhov version ntawm OS.
Qhov teeb meem nrog kev txo qis yog tias Apple tsis kos npe rau cov laus iOS versions zoo nkauj sai sai tom qab ib qho tshiab tso tawm.
Qhov tsuas yog ua ntej iOS 13 version ntawm iOS koj tuaj yeem txo qis rau yog iOS 12.4.1.
Ua ntej koj Downgrade koj iOS
Ua ntej koj pib txo qis koj lub cuab yeej, nws yog qhov tseem ceeb kom nkag siab tias koj tab tom ua dab tsi. Kev txo qis txhais tau tias so tag nrho cov ntaub ntawv los ntawm koj lub cuab yeej thiab rov txhim kho OS qub.
Qhov xwm txheej zoo tshaj plaws yog koj thaub qab koj iPhone ua ntej txhim kho qhov tseeb iOS version. Yog tias koj ua li ntawd, koj tuaj yeem rov qab tau qhov thaub qab ntawd rau hauv koj lub cuab yeej.
Yog tias koj tsis ua, koj yuav tsum tau txo qis koj lub cuab yeej, tom qab ntawd cais tag nrho koj cov ntaub ntawv. Qhov ntawd nyuaj, tab sis nws yog koj qhov kev xaiv nkaus xwb hauv qhov no.
Yuav ua li cas Downgrade iOS tsis poob ntaub ntawv
Yog tias koj npaj siab txo qis mus rau qhov qub version ntawm iOS uas Apple tseem kos npe, koj xav kom koj tsis txhob poob ib qho ntawm cov txheej txheem. Nov yog yam koj yuav tsum ua:
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Download tau lub qub iOS version. Txhawm rau nruab ib qho qub version ntawm iOS, koj yuav tsum rub tawm nws rau koj lub computer. Tau txais cov version koj xav tau, rau koj tus qauv iPhone, ntawm lub vev xaib no.
Nco ntsoov tias muaj lub cim ntsuab ntawm ib sab ntawm cov ntawv koj tab tom rub tawm, lossis nws yuav tsis ua haujlwm.
- Tsis txhob thaiv los ntawm Kev Ua Haujlwm Xauv; tua Nrhiav Kuv iPhone ua ntej. Mus rau Settings > [koj lub npe] > Nrhiav Kuv > Nrhiav Kuv iPhone, tom qab ntawd coj mus rhaub Nrhiav Kuv iPhone slider rau off/dawb.
- Muab koj lub cuab yeej rau hauv hom rov qab. Ua li no yuav tso cai rau koj nruab ib qho kev sib txawv ntawm OS rau koj lub iPhone.
- Ib zaug hauv hom rov qab, txuas koj lub iPhone rau lub khoos phis tawj koj feem ntau sync rau thiab qhib iTunes.
- Hauv iTunes, xaiv lub iPhone icon nyob rau sab saum toj sab laug.
- Txhawm rau nruab qhov qub version ntawm iOS, koj yuav tsum ua raws cov kauj ruam tshwj xeeb. Ua ntej, tuav Option (ntawm Mac) lossis Shift (ntawm PC) thiab tom qab ntawd xaiv Restore iPhone.
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Nyob rau hauv lub qhov rais uas tshwm sim, mus rau hauv koj lub hard drive thiab xaiv cov laus version ntawm lub iOS no koj downloaded nyob rau hauv kauj ruam 1.
- Xaiv Restore hauv iTunes, tom qab ntawd ua raws li cov lus qhia ntawm lub vijtsam hauv iTunes lossis ntawm iPhone.
- Tom qab koj iPhone tau rov pib dua ob peb zaug thiab ua tiav qhov kev txo qis rau cov ntawv dhau los, koj tuaj yeem rov qab tau cov ntaub ntawv thaub qab rau nws.
