diff --git a/android/CMakeLists.txt b/android/CMakeLists.txt
index 9039ce9..acb2d75 100644
--- a/android/CMakeLists.txt
+++ b/android/CMakeLists.txt
@@ -31,6 +31,7 @@ add_library(
 	../libs/poly2tri/poly2tri/sweep/cdt.cc
 	../libs/poly2tri/poly2tri/sweep/sweep_context.cc
 	../libs/poly2tri/poly2tri/sweep/sweep.cc
+	../libs/fmt/src/format.cc
 	src/main/cpp/main.cpp
 	../src/pch.cpp
 	../src/util.cpp
@@ -91,6 +92,7 @@ add_library(
 	../src/node_usermanual.cpp
 	../src/node_viewport.cpp
 	../src/node_scroll.cpp
+	../src/abr.cpp
 )
 
 target_include_directories(native-lib PRIVATE
@@ -107,6 +109,8 @@ target_include_directories(native-lib PRIVATE
 	../libs/sqlite3
 	../libs/nanort
 	../libs/native_app_glue
+	../libs/hash-library
+	../libs/fmt/include
 )
 
 # add lib dependencies
diff --git a/android/src/main/java/com/omixlab/panopainter/MainActivity.java b/android/src/main/java/com/omixlab/panopainter/MainActivity.java
index 41715cf..4cb3ca8 100644
--- a/android/src/main/java/com/omixlab/panopainter/MainActivity.java
+++ b/android/src/main/java/com/omixlab/panopainter/MainActivity.java
@@ -94,7 +94,7 @@ public class MainActivity extends NativeActivity {
 
         }
         // patterns
-        File patterns = new File(pano_dir.getAbsolutePath(), "brushes");
+        File patterns = new File(pano_dir.getAbsolutePath(), "patterns");
         if (!patterns.exists())
         {
             if (patterns.mkdirs())
diff --git a/src/abr.cpp b/src/abr.cpp
index fc94439..ebb10a1 100644
--- a/src/abr.cpp
+++ b/src/abr.cpp
@@ -1,5 +1,6 @@
 #include "pch.h"
 #include "abr.h"
+#include "log.h"
 
 bool ABR::section_desc()
 {
@@ -20,7 +21,11 @@ bool ABR::section_desc()
                 m_presets.push_back(desc);
         }
         auto out = presets->str(0, "");
-        std::cout << out << '\n';
+        auto lines = split(out, '\n');
+        for (const auto& l : lines)
+        {
+            LOG("%s", l.c_str());
+        }
     }
     return true;
 }
@@ -63,7 +68,7 @@ bool ABR::section_patt()
         auto image_mode = ru32();
         if (!(image_mode == 1 || image_mode == 3))
         {
-            printf("PATT: skip image mode  %d\n", image_mode);
+            LOG("PATT: skip image mode  %d\n", image_mode);
             skip(patt_length - 8);
             snap();
             continue;
@@ -83,7 +88,7 @@ bool ABR::section_patt()
             int nc = std::min((int)vm->channels.size(), 3);
             if (nc != image_mode)
             {
-                printf("PATT: image_mode (%d) and number of channels (%d) not matching\n",
+                LOG("PATT: image_mode (%d) and number of channels (%d) not matching\n",
                     image_mode, vm->channels.size());
             }
             if (auto img = vm->image(true))
@@ -135,12 +140,13 @@ std::vector<std::shared_ptr<Brush>> ABR::compute_brushes(const std::string& path
         //b->m_blend_mode = i.m_blend_mode;
         //b->m_name.resize(i.m_name_len);
         //b->m_stencil_path.resize(i.m_stencil_path_len);
-        auto& tip_uid = wstr2str(samp->value<String>("sampledData"));
+        auto tip_uid = wstr2str(samp->value<String>("sampledData"));
+        LOG("tip uid %d %s", tip_uid.size(), tip_uid.c_str());
         b->m_brush_path = path + "/brushes/" + tip_uid + ".png";
         b->m_brush_thumb_path = path + "/brushes/thumbs/" + tip_uid + ".png";
         if (auto patt = p->get<Descriptor>("Txtr"))
         {
-            auto& patt_uid = wstr2str(patt->value<String>("Idnt"));
+            auto patt_uid = wstr2str(patt->value<String>("Idnt"));
             b->m_stencil_path = path + "/patterns/" + patt_uid + ".png";
             //b->m_brush_thumb_path = path + "/patterns/thumbs/" + patt_uid + ".png";
             b->m_tip_stencil = p->value<UnitFloat>("textureDepth") * 0.01f;
@@ -179,7 +185,7 @@ std::shared_ptr<ABR::VMArray> ABR::parse_vmem()
         auto compression = ru8(); // 1 = zip
         if (depth != 8)
         {
-            printf("unsupported depth %d bits\n", depth);
+            LOG("unsupported depth %d bits\n", depth);
             skip(length - 23);
             continue;
         }
@@ -208,7 +214,7 @@ std::shared_ptr<ABR::VMArray> ABR::parse_vmem()
         }
         else
         {
-            printf("unsupported compression mode %d\n", compression);
+            LOG("unsupported compression mode %d\n", compression);
             skip(length - 23);
             continue;
         }
@@ -257,7 +263,7 @@ std::shared_ptr<ABR::Descriptor> ABR::parse_objc()
         if (!property)
             return nullptr;
         if (ret->props.find(key) != ret->props.end())
-            printf("DUPLICATE prop %d\n", key.c_str());
+            LOG("DUPLICATE prop %d\n", key.c_str());
         ret->props[key] = property;
     }
     return ret;
@@ -336,7 +342,7 @@ bool ABR::open(const std::string& path)
         init(asset.read_all(), asset.m_len, BinaryStream::ByteOrder::BigEndian);
         auto version_major = ru16();
         auto version_minor = ru16();
-        printf("ABR %d.%d\n", version_major, version_minor);
+        LOG("ABR %d.%d\n", version_major, version_minor);
         while (!eof())
         {
             if (rstring(4) != "8BIM")
@@ -356,7 +362,7 @@ bool ABR::open(const std::string& path)
             }
             else
             {
-                printf("skip section %s\n", t.c_str());
+                LOG("skip section %s\n", t.c_str());
                 skip(align4(ru32()));
             }
         }
diff --git a/src/abr.h b/src/abr.h
index e6e91aa..d437572 100644
--- a/src/abr.h
+++ b/src/abr.h
@@ -5,6 +5,7 @@
 #include "util.h"
 #include "image.h"
 #include "brush.h"
+#include "log.h"
 
 class BinaryStream
 {
@@ -19,7 +20,7 @@ public:
 
         return bint.c[0] == 1 ? ByteOrder::BigEndian : ByteOrder::LittleEndian;
     }
-    BinaryStream(const BinaryParam&) = delete;
+    BinaryStream(const BinaryStream&) = delete;
     BinaryStream() = default;
     ~BinaryStream()
     {
@@ -66,13 +67,17 @@ public:
     std::wstring rwstring(size_t len) 
     { 
         auto ptr = advance<char>(len * 2);
-        for (int i = 0; i < len; i++)
-            std::swap(ptr[i * 2], ptr[i * 2 + 1]);
+        //for (int i = 0; i < len; i++)
+        //    std::swap(ptr[i * 2], ptr[i * 2 + 1]);
+
         // right trim trailing zeroes
-        auto wptr = (wchar_t*)ptr;
+        auto wptr = (uint16_t*)ptr;
         for (int i = len - 1; i >= 0; i--)
             if (wptr[i] == 0) len--;
-        return std::wstring(wptr, len);
+
+        // wide to UTF-16le
+        std::wstring_convert<std::codecvt_utf16<wchar_t, 0x10ffff>> converter;
+        return converter.from_bytes(ptr, ptr + len * 2);
     }
     std::string rpascal()
     {
@@ -168,7 +173,7 @@ protected:
             return *reinterpret_cast<T*>(&y);
         }
 #else
-        auto p = reinterpret_cast<uint16_t*>(&x);
+        auto p = reinterpret_cast<uint8_t*>(&x);
         if (sizeof(T) == 2)
         {
             std::swap(p[0], p[1]);
@@ -347,7 +352,7 @@ class ABR : private BinaryStream
         uint8_t compression;
         std::vector<uint8_t> data;
         Channel() = default;
-        Channel(uint32_t depth, const Rectangle& rect, uint8_t compression, std::vector<uint8_t>& data) :
+        Channel(uint32_t depth, Rectangle rect, uint8_t compression, std::vector<uint8_t> data) :
             depth(depth), rect(rect), compression(compression), data(std::move(data)) { } 
     };
     struct VMArray : public Type
diff --git a/src/app_events.cpp b/src/app_events.cpp
index c5d71d4..befa88f 100644
--- a/src/app_events.cpp
+++ b/src/app_events.cpp
@@ -98,7 +98,7 @@ void App::pick_file(std::vector<std::string> types, std::function<void (std::str
             callback(path);
     });
 #elif __ANDROID__
-    //android_pick_file(and_app, callback);
+    android_pick_file(and_app, callback);
 #elif _WIN32
     std::string filter = "Supported Files (";
     bool first_type = true;
diff --git a/src/asset.cpp b/src/asset.cpp
index c1761e0..37afbfc 100644
--- a/src/asset.cpp
+++ b/src/asset.cpp
@@ -139,13 +139,25 @@ bool Asset::open(const char* path)
     m_current_path = path;
     std::string file_path = path;
 #ifdef __ANDROID__
-    if (!(m_asset = AAssetManager_open(m_am, path, AASSET_MODE_RANDOM)))
+    if (is_asset(path))
     {
-        LOG("AAssetManager_open failed %s", path);
-        return false;
+        if (!(m_asset = AAssetManager_open(m_am, path, AASSET_MODE_RANDOM)))
+        {
+            LOG("AAssetManager_open failed %s", path);
+            return false;
+        }
+    }
+    else
+    {
+        if (!(m_fp = fopen(file_path.c_str(), "rb")))
+        {
+            LOG("asset open errno = %d, %s", errno, path);
+            return false;
+        }
+        fseek(m_fp, 0, SEEK_END);
+        m_len = (int)ftell(m_fp);
+        fseek(m_fp, 0, SEEK_SET);
     }
-    m_len = (int)AAsset_getLength(m_asset);
-    m_data = (uint8_t*)AAsset_getBuffer(m_asset);
 #else
 #ifdef __APPLE__
     NSString* bundle_path = [[NSBundle mainBundle] resourcePath];
@@ -168,6 +180,24 @@ bool Asset::open(const char* path)
 glm::uint8_t* Asset::read_all()
 {
 #ifdef __ANDROID__
+    if (!m_data)
+    {
+        if (is_asset(m_current_path))
+        {
+            m_len = (int)AAsset_getLength(m_asset);
+            m_data = (uint8_t*)AAsset_getBuffer(m_asset);
+        }
+        else
+        {
+            m_data = new uint8_t[m_len];
+            if (m_len != fread(m_data, 1, m_len, m_fp))
+            {
+                LOG("ASSET READ FAILED for %s", m_current_path.c_str());
+                delete[] m_data;
+                m_data = nullptr;
+            }
+        }
+    }
     return m_data;
 #else
     if (!m_data)
diff --git a/src/brush.cpp b/src/brush.cpp
index 71fe552..cd7dd5c 100644
--- a/src/brush.cpp
+++ b/src/brush.cpp
@@ -286,7 +286,11 @@ bool Brush::load()
     {
         m_tip_texture = std::make_shared<Texture2D>();
         if (!m_tip_texture->load(m_brush_path))
+        {
+            LOG("failed to load %s", m_brush_path.c_str());
+            m_tip_texture = nullptr;
             return false;
+        }
         m_tip_texture->create_mipmaps();
         m_tip_texture->auto_destroy = true;
     }
@@ -294,7 +298,12 @@ bool Brush::load()
     {
         m_stencil_texture = std::make_shared<Texture2D>();
         if (!m_stencil_texture->load(m_stencil_path))
+        {
+            LOG("failed to load %s", m_stencil_path.c_str());
+            m_tip_texture = nullptr;
+            m_stencil_texture = nullptr;
             return false;
+        }
         m_stencil_texture->create_mipmaps();
         m_stencil_texture->auto_destroy = true;
     }
diff --git a/src/image.cpp b/src/image.cpp
index 298da79..897398b 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -41,7 +41,10 @@ bool Image::load_file(std::string filename)
 
 bool Image::save(const std::string& path)
 {
-    return stbi_write_png(path.c_str(), width, height, comp, data(), 0);
+    bool ret = stbi_write_png(path.c_str(), width, height, comp, data(), 0);
+    if (!ret)
+        LOG("failed Image::save %s", path.c_str());
+    return ret;
 }
 
 void Image::flip()
diff --git a/src/node_panel_brush.cpp b/src/node_panel_brush.cpp
index ea5e6cf..b7af258 100644
--- a/src/node_panel_brush.cpp
+++ b/src/node_panel_brush.cpp
@@ -65,7 +65,14 @@ void NodePanelBrush::init()
             if (str_iequals(ext, "abr"))
             {
                 ABR abr;
-                abr.open(path);
+                LOG("ABR detected");
+
+                if (!abr.open(path))
+                {
+                    LOG("ABR read failed");
+                    return;
+                }
+
                 for (const auto& samp : abr.m_samples)
                 {
                     std::string path_high = App::I.data_path + "/brushes/" + samp.first + ".png";
@@ -101,8 +108,13 @@ void NodePanelBrush::init()
                 for (const auto& pr : brushes)
                 {
                     auto presets = App::I.stroke->m_presets_popup;
+                    async_start();
                     if (pr->load())
+                    {
+                        LOG("add preset %s", pr->m_name.c_str());
                         presets->add_brush(pr);
+                    }
+                    async_end();
                 }
                 //save();
             }