{"id":454,"date":"2012-04-17T19:30:27","date_gmt":"2012-04-17T19:30:27","guid":{"rendered":"https:\/\/altrix.cz\/?p=454"},"modified":"2026-06-28T14:33:25","modified_gmt":"2026-06-28T12:33:25","slug":"sony-prs-t1-lockscreen-problem","status":"publish","type":"post","link":"https:\/\/altrix.cz\/?p=454","title":{"rendered":"Sony PRS-T1 Lockscreen problem"},"content":{"rendered":"

Sorry to all Czech readers, but this article should be primary in English.<\/p>\n

A few days ago I bought Sony PRS-T1 e-ink reader. I root it and unlock Android<\/a> on it. Everything works fine, but one day I set up PIN lock using standart Android settings. There is allowed use 16 digits PIN. OK I set up 5 digits. Problems start when device locked up. Unlocking screen allow only 4 digits PIN entry<\/strong><\/span>.<\/p>\n

So I try find out how disable PIN, finally I found it. There is a manual how disable lock.<\/p>\n

    \n
  1. Reboot your device using sharp pencil, hold Home + Menu button and power up device (http:\/\/wiki.mobileread.com\/wiki\/PRST1_Rooting_and_Tweaks#Boot_into_Recovery_Console<\/a>)<\/li>\n
  2. On Windows should be needed to install drivers.<\/a><\/li>\n
  3. After this continue following steps written in link<\/li>\n
  4. Start Putty on COM port which you found in computer management<\/li>\n
  5. Press Enter key and log in using username root<\/li>\n
  6. Now cd to \/tmp<\/li>\n
  7. Insert microSD card to your device<\/li>\n
  8. Use following code to mount \/data and sdcard partition<\/li>\n<\/ol>\n


    \nmkdir sd
    \nmkdir data
    \nmount \/dev\/mmcblk0p1 sd
    \nmount \/dev\/mmcblk2p9 data
    \ncp data\/data\/com.android.providers.settings\/databases\/settings.db sd\/settings.db
    \numount sd
    \n<\/code><\/p>\n

      \n
    1. Now you should have your settings.db on sdcard<\/li>\n
    2. Connect sdcard to another pc and use SQLite DB editor (for Win for example SQLite Database Browser Portable<\/a>)<\/li>\n
    3. Open settings.db in app and in Execute SQL entry<\/li>\n<\/ol>\n


      \nupdate secure set value=0 where name='lockscreen.password_salt';
      \nupdate secure set value=0 where name='lockscreen.password_type';
      \n<\/code><\/p>\n

        \n
      1. And execute query<\/li>\n
      2. Save file and close aplication, disconect you sdcard and put it back into your device<\/li>\n
      3. Get bact to Putty and entry<\/li>\n<\/ol>\n


        \nmount \/dev\/mmcblk0p1 sd
        \ncp data\/data\/com.android.providers.settings\/databases\/settings.db settings.db_bak
        \ncp sd\/settings.db data\/data\/com.android.providers.settings\/databases\/settings.db
        \numount sd
        \nreboot
        \n<\/code><\/p>\n

          \n
        1. Device should reboot and lockscreen disappear<\/li>\n<\/ol>\n

          Thats it, it looks more difficult than it realy it<\/p>\n","protected":false},"excerpt":{"rendered":"

          Sorry to all Czech readers, but this article should be primary in English. A few days ago I bought Sony PRS-T1 e-ink reader. I root it and unlock Android on it. Everything works fine, but one day I set up PIN lock using standart Android settings. There is allowed use 16 digits PIN. OK I […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[7,8,30,42,45,51],"class_list":["post-454","post","type-post","status-publish","format-standard","hentry","category-navody","tag-adb-drivers","tag-android","tag-lock-screen","tag-pin-lock","tag-problem","tag-sony-prs-t1"],"_links":{"self":[{"href":"https:\/\/altrix.cz\/index.php?rest_route=\/wp\/v2\/posts\/454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/altrix.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/altrix.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/altrix.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/altrix.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=454"}],"version-history":[{"count":1,"href":"https:\/\/altrix.cz\/index.php?rest_route=\/wp\/v2\/posts\/454\/revisions"}],"predecessor-version":[{"id":653,"href":"https:\/\/altrix.cz\/index.php?rest_route=\/wp\/v2\/posts\/454\/revisions\/653"}],"wp:attachment":[{"href":"https:\/\/altrix.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/altrix.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/altrix.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}