diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index f09616a..f5fd3a1 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -1487,13 +1487,20 @@
     return partition;
 }
 
-void do_flash(const char* pname, const char* fname, const bool apply_vbmeta) {
+void do_flash(const char* pname, const char* fname, const bool apply_vbmeta,
+              const FlashingPlan* fp) {
     verbose("Do flash %s %s", pname, fname);
     struct fastboot_buffer buf;
 
-    if (!load_buf(fname, &buf)) {
+    if (fp->source) {
+        unique_fd fd = fp->source->OpenFile(fname);
+        if (fd < 0 || !load_buf_fd(std::move(fd), &buf)) {
+            die("could not load '%s': %s", fname, strerror(errno));
+        }
+    } else if (!load_buf(fname, &buf)) {
         die("cannot load '%s': %s", fname, strerror(errno));
     }
+
     if (is_logical(pname)) {
         fb->ResizePartition(pname, std::to_string(buf.image_size));
     }
@@ -1592,7 +1599,7 @@
     if (img_name.empty()) {
         img_name = partition + ".img";
     }
-    return std::make_unique<FlashTask>(slot, partition, img_name, apply_vbmeta);
+    return std::make_unique<FlashTask>(slot, partition, img_name, apply_vbmeta, fp);
 }
 
 std::unique_ptr<RebootTask> ParseRebootCommand(const FlashingPlan* fp,
@@ -1666,7 +1673,7 @@
 }
 
 static bool IsIgnore(const std::vector<std::string>& command) {
-    if (command[0][0] == '#') {
+    if (command.size() == 0 || command[0][0] == '#') {
         return true;
     }
     return false;
@@ -1748,16 +1755,6 @@
     return tasks;
 }
 
-std::vector<std::unique_ptr<Task>> ParseFastbootInfo(const FlashingPlan* fp, std::ifstream& fs) {
-    std::string text;
-    std::vector<std::string> file;
-    // Get os_partitions that need to be resized
-    while (std::getline(fs, text)) {
-        file.emplace_back(text);
-    }
-    return ParseFastbootInfo(fp, file);
-}
-
 FlashAllTool::FlashAllTool(FlashingPlan* fp) : fp_(fp) {}
 
 void FlashAllTool::Flash() {
@@ -1777,16 +1774,17 @@
 
     CancelSnapshotIfNeeded();
 
-    std::string path = find_item_given_name("fastboot-info.txt");
-    std::ifstream stream(path);
-    if (!stream || stream.eof()) {
+    std::vector<char> contents;
+    if (!fp_->source->ReadFile("fastboot-info.txt", &contents)) {
         LOG(VERBOSE) << "Flashing from hardcoded images. fastboot-info.txt is empty or does not "
                         "exist";
         HardcodedFlash();
         return;
     }
 
-    std::vector<std::unique_ptr<Task>> tasks = ParseFastbootInfo(fp_, stream);
+    std::vector<std::unique_ptr<Task>> tasks =
+            ParseFastbootInfo(fp_, Split({contents.data(), contents.size()}, "\n"));
+
     if (tasks.empty()) {
         LOG(FATAL) << "Invalid fastboot-info.txt file.";
     }
@@ -2115,7 +2113,7 @@
 }
 
 static bool wipe_super(const android::fs_mgr::LpMetadata& metadata, const std::string& slot,
-                       std::string* message) {
+                       std::string* message, const FlashingPlan* fp) {
     auto super_device = GetMetadataSuperBlockDevice(metadata);
     auto block_size = metadata.geometry.logical_block_size;
     auto super_bdev_name = android::fs_mgr::GetBlockDevicePartitionName(*super_device);
@@ -2155,7 +2153,7 @@
 
         auto image_path = temp_dir.path + "/"s + image_name;
         auto flash = [&](const std::string& partition_name) {
-            do_flash(partition_name.c_str(), image_path.c_str(), false);
+            do_flash(partition_name.c_str(), image_path.c_str(), false, fp);
         };
         do_for_partitions(partition, slot, flash, force_slot);
 
@@ -2164,7 +2162,8 @@
     return true;
 }
 
-static void do_wipe_super(const std::string& image, const std::string& slot_override) {
+static void do_wipe_super(const std::string& image, const std::string& slot_override,
+                          const FlashingPlan* fp) {
     if (access(image.c_str(), R_OK) != 0) {
         die("Could not read image: %s", image.c_str());
     }
@@ -2179,7 +2178,7 @@
     }
 
     std::string message;
-    if (!wipe_super(*metadata.get(), slot, &message)) {
+    if (!wipe_super(*metadata.get(), slot, &message, fp)) {
         die(message);
     }
 }
@@ -2476,7 +2475,7 @@
             }
             if (fname.empty()) die("cannot determine image filename for '%s'", pname.c_str());
 
-            FlashTask task(fp->slot_override, pname, fname, is_vbmeta_partition(pname));
+            FlashTask task(fp->slot_override, pname, fname, is_vbmeta_partition(pname), fp.get());
             task.Run();
         } else if (command == "flash:raw") {
             std::string partition = next_arg(&args);
@@ -2571,7 +2570,7 @@
             } else {
                 image = next_arg(&args);
             }
-            do_wipe_super(image, fp->slot_override);
+            do_wipe_super(image, fp->slot_override, fp.get());
         } else if (command == "snapshot-update") {
             std::string arg;
             if (!args.empty()) {
diff --git a/fastboot/fastboot.h b/fastboot/fastboot.h
index 80b77a0..0a1f1eb 100644
--- a/fastboot/fastboot.h
+++ b/fastboot/fastboot.h
@@ -124,7 +124,8 @@
 
 bool should_flash_in_userspace(const std::string& partition_name);
 bool is_userspace_fastboot();
-void do_flash(const char* pname, const char* fname, const bool apply_vbmeta);
+void do_flash(const char* pname, const char* fname, const bool apply_vbmeta,
+              const FlashingPlan* fp);
 void do_for_partitions(const std::string& part, const std::string& slot,
                        const std::function<void(const std::string&)>& func, bool force_slot);
 std::string find_item(const std::string& item);
diff --git a/fastboot/task.cpp b/fastboot/task.cpp
index e98effb..cb12060 100644
--- a/fastboot/task.cpp
+++ b/fastboot/task.cpp
@@ -27,8 +27,8 @@
 
 using namespace std::string_literals;
 FlashTask::FlashTask(const std::string& slot, const std::string& pname, const std::string& fname,
-                     const bool apply_vbmeta)
-    : pname_(pname), fname_(fname), slot_(slot), apply_vbmeta_(apply_vbmeta) {}
+                     const bool apply_vbmeta, const FlashingPlan* fp)
+    : pname_(pname), fname_(fname), slot_(slot), apply_vbmeta_(apply_vbmeta), fp_(fp) {}
 
 void FlashTask::Run() {
     auto flash = [&](const std::string& partition) {
@@ -41,7 +41,7 @@
                 "And try again. If you are intentionally trying to "
                 "overwrite a fixed partition, use --force.");
         }
-        do_flash(partition.c_str(), fname_.c_str(), apply_vbmeta_);
+        do_flash(partition.c_str(), fname_.c_str(), apply_vbmeta_, fp_);
     };
     do_for_partitions(pname_, slot_, flash, true);
 }
diff --git a/fastboot/task.h b/fastboot/task.h
index d113f18..82e8ebf 100644
--- a/fastboot/task.h
+++ b/fastboot/task.h
@@ -46,7 +46,7 @@
 class FlashTask : public Task {
   public:
     FlashTask(const std::string& slot, const std::string& pname, const std::string& fname,
-              const bool apply_vbmeta);
+              const bool apply_vbmeta, const FlashingPlan* fp);
     virtual FlashTask* AsFlashTask() override { return this; }
 
     std::string GetPartition() { return pname_; }
@@ -60,6 +60,7 @@
     const std::string fname_;
     const std::string slot_;
     const bool apply_vbmeta_;
+    const FlashingPlan* fp_;
 };
 
 class RebootTask : public Task {