diff --git a/cmds/installd/Android.bp b/cmds/installd/Android.bp
index 619579e..18c267d 100644
--- a/cmds/installd/Android.bp
+++ b/cmds/installd/Android.bp
@@ -191,10 +191,6 @@
         "libbase",
         "liblog",
         "libutils",
-        "libbinder",
-    ],
-    static_libs: [
-      "ota_dexopt_aidl_interface-cpp",
     ],
     required: [
       "apexd"
diff --git a/cmds/installd/otapreopt_chroot.cpp b/cmds/installd/otapreopt_chroot.cpp
index 7fcce2c..c62734a 100644
--- a/cmds/installd/otapreopt_chroot.cpp
+++ b/cmds/installd/otapreopt_chroot.cpp
@@ -21,21 +21,15 @@
 #include <sys/wait.h>
 
 #include <array>
-#include <chrono>
 #include <fstream>
 #include <sstream>
-#include <thread>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/macros.h>
-#include <android-base/parseint.h>
 #include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>
-#include <android-base/strings.h>
 #include <android-base/unique_fd.h>
-#include <android/content/pm/IOtaDexopt.h>
-#include <binder/IServiceManager.h>
 #include <libdm/dm.h>
 #include <selinux/android.h>
 
@@ -51,8 +45,6 @@
 namespace android {
 namespace installd {
 
-using namespace std::literals::chrono_literals;
-
 static void CloseDescriptor(int fd) {
     if (fd >= 0) {
         int result = close(fd);
@@ -61,6 +53,15 @@
     }
 }
 
+static void CloseDescriptor(const char* descriptor_string) {
+    int fd = -1;
+    std::istringstream stream(descriptor_string);
+    stream >> fd;
+    if (!stream.fail()) {
+        CloseDescriptor(fd);
+    }
+}
+
 static void ActivateApexPackages() {
     std::vector<std::string> apexd_cmd{"/system/bin/apexd", "--otachroot-bootstrap"};
     std::string apexd_error_msg;
@@ -112,38 +113,6 @@
     UNUSED(mount_result);
 }
 
-static android::sp<android::content::pm::IOtaDexopt> GetDexoptService() {
-    auto binder = android::defaultServiceManager()->getService(android::String16("otadexopt"));
-    if (binder == nullptr) {
-        return nullptr;
-    }
-    return android::interface_cast<android::content::pm::IOtaDexopt>(binder);
-}
-
-static bool RunDexoptCommand(int argc, char **arg, const std::string& dexopt_cmd) {
-    // Incoming:  cmd + status-fd + target-slot + cmd...      | Incoming | = argc
-    // Outgoing:  cmd             + target-slot + cmd...      | Outgoing | = argc - 1
-    std::vector<std::string> cmd;
-    cmd.reserve(argc);
-    cmd.push_back("/system/bin/otapreopt");
-
-    // The first parameter is the status file descriptor, skip.
-    for (size_t i = 2; i < static_cast<size_t>(argc); ++i) {
-        cmd.push_back(arg[i]);
-    }
-    for (const std::string& part : android::base::Split(dexopt_cmd, " ")) {
-        cmd.push_back(part);
-    }
-
-    // Fork and execute otapreopt in its own process.
-    std::string error_msg;
-    bool exec_result = Exec(cmd, &error_msg);
-    if (!exec_result) {
-        LOG(ERROR) << "Running otapreopt failed: " << error_msg;
-    }
-    return exec_result;
-}
-
 // Entry for otapreopt_chroot. Expected parameters are:
 //   [cmd] [status-fd] [target-slot] "dexopt" [dexopt-params]
 // The file descriptor denoted by status-fd will be closed. The rest of the parameters will
@@ -161,18 +130,8 @@
     CloseDescriptor(STDIN_FILENO);
     CloseDescriptor(STDOUT_FILENO);
     CloseDescriptor(STDERR_FILENO);
-
-    int fd;
-    if (!android::base::ParseInt(arg[1], &fd)) {
-        LOG(ERROR) << "Failed to parse " << arg[1];
-        exit(225);
-    }
-    // Add O_CLOEXEC to status channel, since we don't want to pass it across fork/exec, but we need
-    // to keep it open in otapreopt_chroot to report progress
-    if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
-        PLOG(ERROR) << "Failed to set O_CLOEXEC on " << fd;
-        exit(226);
-    }
+    // 2) The status channel.
+    CloseDescriptor(arg[1]);
 
     // We need to run the otapreopt tool from the postinstall partition. As such, set up a
     // mount namespace and change root.
@@ -354,50 +313,28 @@
         exit(218);
     }
 
-    android::sp<android::content::pm::IOtaDexopt> dexopt = GetDexoptService();
-    if (dexopt == nullptr) {
-        LOG(ERROR) << "Failed to find otadexopt service";
-        exit(222);
+    // Now go on and run otapreopt.
+
+    // Incoming:  cmd + status-fd + target-slot + cmd...      | Incoming | = argc
+    // Outgoing:  cmd             + target-slot + cmd...      | Outgoing | = argc - 1
+    std::vector<std::string> cmd;
+    cmd.reserve(argc);
+    cmd.push_back("/system/bin/otapreopt");
+
+    // The first parameter is the status file descriptor, skip.
+    for (size_t i = 2; i < static_cast<size_t>(argc); ++i) {
+        cmd.push_back(arg[i]);
     }
 
-    android::base::borrowed_fd status_fd(fd);
-    // Now go on and run otapreopt.
-    constexpr const int kMaximumPackages = 1000;
-    for (int iter = 0; iter < kMaximumPackages; iter++) {
-        android::String16 cmd;
-        android::binder::Status status = dexopt->nextDexoptCommand(&cmd);
-        if (!status.isOk()) {
-            LOG(ERROR) << "Failed to retrieve next dexopt command";
-            // Should we fail instead?
-            exit(224);
-        }
-        if (!RunDexoptCommand(argc, arg, android::String8(cmd).string())) {
-            exit(213);
-        }
+    // Fork and execute otapreopt in its own process.
+    std::string error_msg;
+    bool exec_result = Exec(cmd, &error_msg);
+    if (!exec_result) {
+        LOG(ERROR) << "Running otapreopt failed: " << error_msg;
+    }
 
-        float progress;
-        status = dexopt->getProgress(&progress);
-        if (!status.isOk()) {
-            LOG(ERROR) << "Failed to retrieve dexopt progress";
-            continue;
-        }
-        LOG(VERBOSE) << "Progress: " << progress;
-        std::string progress_str = StringPrintf("global_progress %.2f\n", progress);
-        if (!android::base::WriteStringToFd(progress_str, status_fd)) {
-            PLOG(ERROR) << "Failed to write '" << progress_str << "' to " << status_fd.get();
-        }
-
-        bool done;
-        status = dexopt->isDone(&done);
-        if (!status.isOk()) {
-            LOG(WARNING) << "Failed to check if dexopt is done";
-            continue;
-        }
-        if (done) {
-            LOG(INFO) << "dexopt is done";
-            break;
-        }
-        std::this_thread::sleep_for(1s);
+    if (!exec_result) {
+        exit(213);
     }
 
     return 0;
diff --git a/cmds/installd/otapreopt_script.sh b/cmds/installd/otapreopt_script.sh
index 8bcbc9f..f950276 100644
--- a/cmds/installd/otapreopt_script.sh
+++ b/cmds/installd/otapreopt_script.sh
@@ -58,7 +58,23 @@
 PROGRESS=$(cmd otadexopt progress)
 print -u${STATUS_FD} "global_progress $PROGRESS"
 
-/system/bin/otapreopt_chroot $STATUS_FD $TARGET_SLOT_SUFFIX $DEXOPT_PARAMS >&- 2>&-
+i=0
+while ((i<MAXIMUM_PACKAGES)) ; do
+  DEXOPT_PARAMS=$(cmd otadexopt next)
+
+  /system/bin/otapreopt_chroot $STATUS_FD $TARGET_SLOT_SUFFIX $DEXOPT_PARAMS >&- 2>&-
+
+  PROGRESS=$(cmd otadexopt progress)
+  print -u${STATUS_FD} "global_progress $PROGRESS"
+
+  DONE=$(cmd otadexopt done)
+  if [ "$DONE" = "OTA incomplete." ] ; then
+    sleep 1
+    i=$((i+1))
+    continue
+  fi
+  break
+done
 
 DONE=$(cmd otadexopt done)
 if [ "$DONE" = "OTA incomplete." ] ; then