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--- manual:faq:pro_to_lm4 [2022/04/12 18:56] – mstupka
+++ manual:faq:pro_to_lm4 [2025/10/08 15:59] (current) – mstupka
@@ Line 2: / Line 2: @@
 ----
-===== Android 11+ =====
+Locus Map is a complex software with many customization options. Before the transfer of your data from Locus Map Classic to Locus Map 4, please pay attention to the following:
-Due to the [[manual:faq:android_11_filesystem|recent changes in the Android file system]], apps can no longer share one data directory. It is possible to **[[manual:faq:new_install_second_app|transfer the data from one Locus to the other]]** though. [[manual:faq:new_install_second_app|See how to do it >>]]
-===== Android 5 - 10 =====
-Both apps share the same data directory but each has different settings. So please do the following:
+  * **[[manual:user_guide:settings:backup_fsys#set_the_main_directory|Move the main app directory]] to the internal storage of your phone or tablet.**
+  * **[[manual:user_guide:settings:backup_fsys#set_custom_sub-directories|Set all custom subdirectories to the default]] within the main app directory.**
-  * install Locus Map 4 to the **same storage** as your Locus Map Classic (don't worry about any conflict)
+===== Seamless upgrade =====
-  * make a **[[https://docs.locusmap.eu/doku.php?id=manual:user_guide:tools:backup#manual_backup|complete backup]]** of Locus Map Classic data
+<WRAP center round info>
-  * open the backup file in Locus Map 4 **backup manager**
+**Valid for Locus Map Classic version 3.70.17 and newer.** Please update your app to this version before proceeding.
-  * restore all items except the points/tracks/routes database (no need to do it):\\ {{ :manual:faq:migration.jpg?nolink |}}
+</WRAP>
-  * **restart Locus Map 4**
-  * (uninstall Locus Map Classic if you don't need it any longer)
+  * Tap **Upgrade to Locus Map 4!** in the Locus Map Classic main menu
+  * You are redirected to Google Play to **install Locus Map 4** (if you have already installed Locus Map 4 before, this step is skipped). After installing LM4, get back to LM Classic.
+  * Back in Locus Map Classic, a **migration backup file is automatically created**. It contains all your data – tracks, routes, points, maps and settings
+  * When done, Locus Map 4 is started and the **migration backup is restored** in it
+  * **Restart Locus Map 4 and you’re done!**\\ {{ :manual:faq:lmc-lm4.gif?nolink |}}
+To get the discount of 100% on Premium Silver and 50% on Premium Gold, log in with the same Locus account you used in Locus Map Classic.
+===== Android 6 - 10 =====
+<WRAP center round important>
+  * **It is not possible to use both Locus Map 4 and Locus Map Classic with one shared directory.** LM 4 uses a different database structure. Installing LM 4 in the same directory converts the database to LM 4 version and disables LM Classic from reading the database.
+  * To prevent converting the LM Classic Library, **make sure the main directory of Locus Map Classic is moved to the private sector in the Android/data folder** before installing Locus Map 4.
+</WRAP>
+After the measures above, you may perform the seamless upgrade as described in the first paragraph.

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