{"id":13115,"date":"2022-05-31T22:12:00","date_gmt":"2022-05-31T14:12:00","guid":{"rendered":"https:\/\/rewa.tech\/iphone-x-apps-crashing-repair\/"},"modified":"2025-07-16T15:12:39","modified_gmt":"2025-07-16T07:12:39","slug":"iphone-x-apps-crashing-repair","status":"publish","type":"post","link":"https:\/\/rewa.tech\/de\/iphone-x-apps-crashing-repair\/","title":{"rendered":"Wie iPhone X Apps Absturz Problem (Fehler 1100) zu beheben - Schritt f\u00fcr Schritt CPU Resoldering Reparatur"},"content":{"rendered":"<p>St\u00fcrzt Ihr iPhone X st\u00e4ndig ab, wenn Sie Apps \u00f6ffnen - selbst nach einer Wiederherstellung? Da sind Sie nicht allein. Dieses Problem ist oft mit einem tieferen Hardware-Fehler verbunden, vor allem, wenn Sie folgende Probleme haben <strong>iTunes restore error 1100<\/strong>. While software problems are a common culprit, in this case, the cause is more likely poor <strong>CPU soldering<\/strong> on the motherboard.<\/p>\n\n\n\n<p>In this comprehensive repair guide, we&#8217;ll walk you through how to diagnose and resolve iPhone X app crashing problems by <strong>resoldering the CPU upper layer<\/strong> and properly reassembling the motherboard. Whether you&#8217;re a repair technician, DIY enthusiast, or run a repair shop, this guide offers actionable steps to bring the iPhone X back to life.<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element has-pale-ocean-gradient-background has-background\"><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"284\" height=\"371\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_X.png\" alt=\"iphone x\" class=\"wp-image-14685 size-full\" style=\"object-position:50% 0%\" title=\"\" srcset=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_X.png 284w, https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_X-230x300.png 230w\" sizes=\"(max-width: 284px) 100vw, 284px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\">Model Overview<\/h2>\n\n\n\n<p><strong>Modell:<\/strong> iPhone X<\/p>\n\n\n\n<p><strong>Angek\u00fcndigt:<\/strong> 2017, September 12<\/p>\n\n\n\n<p><strong>Issue<\/strong>: Apps keep crashing after restore; iTunes reports error 1100<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Defect Analysis: iPhone X Apps Crashing Issue<\/h3>\n\n\n\n<p>A customer brought in an iPhone X with persistent app crashing problems. Despite performing a full system restore just days before, the issue remained. We initially suspected a software glitch but ruled it out after another restore attempt via iTunes resulted in <strong>error 1100<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udd0d What&#8217;s Error 1100?<\/h4>\n\n\n\n<p>Error 1100 typically indicates a <strong>hardware communication failure<\/strong>, often related to the <strong>CPU or NAND soldering quality<\/strong>. In this case, the CPU\u2019s upper layer connection was the root cause.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Repair Process: iPhone X CPU Resoldering &amp; Motherboard Recombination<\/h2>\n\n\n\n<p>Here\u2019s a breakdown of the hands-on repair process performed by REWA technicians:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Attempt Restore via iTunes<\/h3>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Restored the device using iTunes \u2192 Error 1100 appeared<\/li>\n\n\n\n<li>Diagnosis: Potential <strong>CPU upper layer soldering issue<\/strong><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/Remove_the_upper_layer_of_the_CPU_by_the_hot_air_gun.png\" alt=\"iphone x motherboard repair\" title=\"\"><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Remove the CPU Upper Layer<\/h3>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<p>Tools used: Hot air gun, sculpture knife<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gently heat the CPU<\/strong> using a hot air gun<\/li>\n\n\n\n<li><strong>Carefully pry the upper layer<\/strong> off the chip with a sculpture knife<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/01__Clean_the_residual_glues_on_the_CPU_pads.png\" alt=\"iphone x motherboard repair\" title=\"\"><\/figure>\n<\/div>\n<\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u26a0\ufe0f <strong>Caution<\/strong>: Do not overheat. Avoid damaging the lower CPU layer.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Clean the Tin Pads<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Remove residual glue using cleaning solvent<\/li>\n\n\n\n<li>Ensure all solder pads are clean and evenly exposed<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Solder the CPU Upper Layer Back<\/h3>\n\n\n\n<p>Tools used: Solder flux, tweezers, hot air gun<\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Bewerbung <strong>solder flux<\/strong> to the CPU pad area<\/li>\n\n\n\n<li>Align the upper layer with the lower layer using tweezers<\/li>\n\n\n\n<li>Heat gently with a hot air gun and slightly press the chip<\/li>\n\n\n\n<li>If the chip re-seats perfectly, <strong>soldering is successful<\/strong><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/02__Solder_the_upper_layer_of_the_CPU.png\" alt=\"iphone x a11 chip\" title=\"\"><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Step 5: Reassemble the Motherboard<\/h3>\n\n\n\n<p>Tools used: Heating platform<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Align both layers of the motherboard using tweezers<\/li>\n\n\n\n<li>Set heating platform temperature to <strong>130\u00b0C<\/strong><\/li>\n\n\n\n<li>Start heating. Continue for <strong>1 additional minute<\/strong> once the motherboard sinks and solder flux flows out<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rewa.tech\/wp-content\/uploads\/2024\/04\/iPhone_X_Apps_Crashing.png\" alt=\"iPhone X Apps Crashing\" title=\"\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Schritt 6: Abschlie\u00dfende Pr\u00fcfung<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reassemble the phone<\/li>\n\n\n\n<li>Power it on and test:<br>\u2705 Apps launch normally<br>\u2705 All functions work as expected<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Verwendete Werkzeuge und Teile<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hei\u00dfluftpistole<\/li>\n\n\n\n<li>Bildhauermesser<\/li>\n\n\n\n<li>L\u00f6tflussmittel<\/li>\n\n\n\n<li>Pinzette<\/li>\n\n\n\n<li>Cleaning solution (for glue removal)<\/li>\n\n\n\n<li>Heizplattform<\/li>\n\n\n\n<li>iTunes (for initial software restore)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Technical Terms<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bildhauermesser<\/strong>: A precision tool used to lift components or remove glue without damaging the PCB.<\/li>\n\n\n\n<li><strong>L\u00f6tflussmittel<\/strong>: A chemical agent that helps solder flow smoothly and prevents oxidation during soldering.<\/li>\n\n\n\n<li><strong>Tin pads<\/strong>: The contact areas on the motherboard or CPU where solder connects components.<\/li>\n\n\n\n<li><strong>Heizplattform<\/strong>: A temperature-controlled base used to heat the motherboard evenly for soldering or reflow work.<\/li>\n\n\n\n<li><strong>Motherboard recombination<\/strong>: Reassembling a split-layered motherboard (common in iPhone logic boards) using controlled heat and alignment.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion: Mastering iPhone X App Crash Repairs<\/h2>\n\n\n\n<p>Fixing the iPhone X apps crashing issue\u2014especially those tied to <strong>iTunes error 1100<\/strong>\u2014often goes beyond software troubleshooting. As this case demonstrated, <strong>poor soldering between CPU layers<\/strong> can disrupt app stability. By mastering CPU resoldering and motherboard recombination, you can restore functionality and save devices that might otherwise be considered irreparable.<\/p>\n\n\n\n<p>Want to perfect your soldering skills? <strong>Join the <a href=\"https:\/\/academy.rewa.tech\">REWA-Akademie<\/a>\u2019s iPhone Motherboard Repair Course<\/strong> for in-depth, hands-on training.<\/p>","protected":false},"excerpt":{"rendered":"<p>Is your iPhone X constantly crashing whenever you open apps\u2014even after a restore? You&#8217;re not alone. This issue is often linked to a deeper hardware fault, especially if you&#8217;re seeing iTunes restore error 1100. While software problems are a common culprit, in this case, the cause is more likely poor CPU soldering on the motherboard. [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":13116,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[16,158,447],"tags":[21,153],"class_list":["post-13115","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-iphone-guide","category-troubleshooting","tag-iphone","tag-phone-repair"],"_links":{"self":[{"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/posts\/13115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/comments?post=13115"}],"version-history":[{"count":0,"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/posts\/13115\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/media\/13116"}],"wp:attachment":[{"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/media?parent=13115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/categories?post=13115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rewa.tech\/de\/wp-json\/wp\/v2\/tags?post=13115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}