diff --git a/app/commands.hh b/app/commands.hh
index 86bfd80..5d7d3fa 100644
--- a/app/commands.hh
+++ b/app/commands.hh
@@ -33,10 +33,9 @@ struct ReadJedec : public Commands<T> {
     if (auto jedec = this->flash.jedec()) {
       std::println("{}", *jedec);
       return 0;
-    } else {
-      std::println("Jedec failed");
-      return 1;
     }
+    std::println("Jedec failed");
+    return 1;
   }
 };
 
@@ -63,10 +62,9 @@ struct ReadPage : public Commands<T> {
   int run() override {
     if (auto page = this->flash.single_read_page(addr)) {
       std::println("Single read {:#x} : {}", addr, *page);
-    } else {
-      std::println("page failed");
+      return 0;
     }
-
+    std::println("page failed");
     return 1;
   }
 };
@@ -257,9 +255,8 @@ struct LoadFile : public Commands<T> {
     if (bootstrap) {
       this->flash.reset();
       return 1;
-    } else {
-      return commands::VerifyFile(this->flash, filename, start_addr, quad).run();
     }
+    return commands::VerifyFile(this->flash, filename, start_addr, quad).run();
   }
 };
 
diff --git a/app/main.cc b/app/main.cc
index dd73453..2237fce 100644
--- a/app/main.cc
+++ b/app/main.cc
@@ -33,11 +33,6 @@ static std::vector<ftdi::DeviceInfo> scan() {
     exit(0);
   }
 
-  // for (auto &device: devices) {
-  //   if (device.type == ftdi::DeviceType::Ftdi_unknown) {
-  //     std::println("Warning: device not {}");
-  //   }
-  // }
   return devices;
 }
 
@@ -117,7 +112,7 @@ int main(int argc, char* argv[]) {
     return 0;
   };
 
-  auto jedec_cmd = new_flash_command("jedec", "Test the ftdi connection.");
+  auto jedec_cmd = new_flash_command("jedec", "Read the JEDEC identifier.");
   program.add_subparser(*jedec_cmd);
   commands["jedec"] = [&]() -> int {
     auto spih = handle_flash_command(jedec_cmd);
@@ -126,7 +121,7 @@ int main(int argc, char* argv[]) {
     return 0;
   };
 
-  auto sfdp_cmd = new_flash_command("sfdp", "Test the ftdi connection.");
+  auto sfdp_cmd = new_flash_command("sfdp", "Read serial flash description.");
   program.add_subparser(*sfdp_cmd);
   commands["sfdp"] = [&]() -> int {
     auto spih = handle_flash_command(sfdp_cmd);
@@ -135,7 +130,7 @@ int main(int argc, char* argv[]) {
     return 0;
   };
 
-  auto read_page_cmd = new_flash_command("read-page", "Read a specific page");
+  auto read_page_cmd = new_flash_command("read-page", "Read a specific page.");
   read_page_cmd->add_argument("--addr").help("The page address").scan<'x', std::size_t>();
   program.add_subparser(*read_page_cmd);
   commands["read-page"] = [&]() -> int {
@@ -146,7 +141,7 @@ int main(int argc, char* argv[]) {
     return 0;
   };
 
-  auto test_page_cmd = new_flash_command("test-page", "Write a pattern to a page and read it back");
+  auto test_page_cmd = new_flash_command("test-page", "Write a pattern to a page and read it back.");
   test_page_cmd->add_argument("--addr")
       .help("The address to be loaded")
       .default_value(std::size_t{0})
@@ -184,7 +179,7 @@ int main(int argc, char* argv[]) {
   };
 
   auto verify_file_cmd = new_flash_command(
-      "verify-file", "Compare the hash if a file to hash of the flash content at the address.");
+      "verify-file", "Compare the hash of a file to the hash of the flash content at the address.");
   verify_file_cmd->add_argument("filename").help("The file path.");
   verify_file_cmd->add_argument("--addr")
       .help("The address to be loaded")
@@ -207,7 +202,7 @@ int main(int argc, char* argv[]) {
   };
 
   auto bootstrap_cmd = new_flash_command(
-      "bootstrap", "Write the content of a binary file to a address and reset the target");
+      "bootstrap", "Write the content of a binary file to an address and reset the target.");
   bootstrap_cmd->add_argument("filename").help("The file path.");
   bootstrap_cmd->add_argument("--addr")
       .help("The address to be loaded")
diff --git a/doc/img/deps.png b/doc/img/deps.png
index 2090082..2f47a43 100644
Binary files a/doc/img/deps.png and b/doc/img/deps.png differ
diff --git a/lib/ftdi/spi_host.cc b/lib/ftdi/spi_host.cc
index 5d72281..15c267b 100644
--- a/lib/ftdi/spi_host.cc
+++ b/lib/ftdi/spi_host.cc
@@ -53,7 +53,7 @@ SpiHost::transfer(std::span<uint8_t> write, std::span<uint8_t> read) {
 
     FT4222_STATUS status;
     status = FT4222_SPIMaster_SingleWrite(handle, write.data(), write.size(), &transfered, false);
-    status = FT4222_SPIMaster_SingleRead(handle, read.data(), write.size(), &transfered, true);
+    status = FT4222_SPIMaster_SingleRead(handle, read.data(), read.size(), &transfered, true);
     if (FT4222_OK != status) {
       std::cerr << std::format("SingleReadWrite:{}\n", status);
       return embeddedpp::Code::Generic;
diff --git a/lib/ftdi/spi_host.hh b/lib/ftdi/spi_host.hh
index 51d282f..b1f071c 100644
--- a/lib/ftdi/spi_host.hh
+++ b/lib/ftdi/spi_host.hh
@@ -29,9 +29,6 @@ class SpiHost {
   explicit SpiHost(FT_HANDLE handle, bool mpsse = false) noexcept
       : handle(handle), mpsse(mpsse), traces(false) {}
   ~SpiHost() {
-    // std::println("destructor");
-    // TODO: fix copy elision.
-    // close();
   }
 
   void close() {