diff --git a/releases/Next-ChangeLog.md b/releases/Next-ChangeLog.md
index 337a00f4..9fbc4297 100644
--- a/releases/Next-ChangeLog.md
+++ b/releases/Next-ChangeLog.md
@@ -25,7 +25,9 @@ This lists the new changes that have not yet been published in a normal release.
 - Enhancement: 10% performance improvement in USB upload speed for large files
 - Bugfix: Fix stuck progress bar under `Receiving...` after a USB communications failure
 - Bugfix: Showing derivation path in Address Explorer for root key (m) showed double slash (//)
-- Bugfix: Enable to restore dev backup with custom password other than 12 words format 
+- Bugfix: Enable to restore dev backup with custom password other than 12 words format
+- Bugfix: Virtual Disk auto mode ignore already signed PSBTs (with "-signed" in file name)
+- Bugfix: Virtual Disk auto mode stuck on "Reading..." screen
 
 
 # Mk4 Specific Changes
diff --git a/shared/auth.py b/shared/auth.py
index 3559f763..a09dc077 100644
--- a/shared/auth.py
+++ b/shared/auth.py
@@ -13,7 +13,7 @@ from public_constants import AFC_SCRIPT, AF_CLASSIC, AFC_BECH32, AF_P2WPKH, AF_P
 from public_constants import STXN_FINALIZE, STXN_VISUALIZE, STXN_SIGNED
 from sffile import SFFile
 from ux import ux_aborted, ux_show_story, abort_and_goto, ux_dramatic_pause, ux_clear_keys
-from ux import show_qr_code, OK, X, ux_input_text, ux_enter_bip32_index
+from ux import show_qr_code, OK, X, ux_input_text, ux_enter_bip32_index, abort_and_push
 from usb import CCBusyError
 from utils import HexWriter, xfp2str, problem_file_line, cleanup_deriv_path, chunk_checksum
 from utils import B2A, to_ascii_printable, show_single_address
@@ -1439,7 +1439,7 @@ async def done_signing(psbt, input_method=None, filename=None, force_vdisk=False
             n += 1
 
 
-async def sign_psbt_file(filename, force_vdisk=False, slot_b=None):
+async def sign_psbt_file(filename, force_vdisk=False, slot_b=None, abort=False):
     # sign a PSBT file found on a MicroSD card
     # - or from VirtualDisk (mk4)
     from files import CardSlot
@@ -1498,7 +1498,11 @@ async def sign_psbt_file(filename, force_vdisk=False, slot_b=None):
              "force_vdisk": force_vdisk,
              "output_encoder": output_encoder}
     )
-    the_ux.push(UserAuthorizedAction.active_request)
+    if abort:
+        # needed for auto vdisk mode
+        abort_and_push(UserAuthorizedAction.active_request)
+    else:
+        the_ux.push(UserAuthorizedAction.active_request)
 
 class RemoteBackup(UserAuthorizedAction):
     def __init__(self):
diff --git a/shared/vdisk.py b/shared/vdisk.py
index 8b4fcab4..483281d0 100644
--- a/shared/vdisk.py
+++ b/shared/vdisk.py
@@ -111,10 +111,10 @@ class VirtDisk:
 
         return actual
 
-    def new_psbt(self, filename, sz):
+    def new_psbt(self, filename):
         # New incoming PSBT has been detected, start to sign it.
         from auth import sign_psbt_file
-        uasyncio.create_task(sign_psbt_file(filename, force_vdisk=True))
+        uasyncio.create_task(sign_psbt_file(filename, force_vdisk=True, abort=True))
 
     def new_firmware(self, filename, sz):
         # potential new firmware file detected
@@ -157,9 +157,9 @@ class VirtDisk:
 
             lfn = fn.lower()
 
-            if lfn.endswith('.psbt') and sz > 100:
+            if lfn.endswith('.psbt') and sz > 100 and ("-signed" not in lfn):
                 self.ignore.add(fn)
-                self.new_psbt(fn, sz)
+                self.new_psbt(fn)
                 break
 
             if lfn.endswith('.dfu') and sz > FW_MIN_LENGTH:
diff --git a/unix/variant/sim_vdisk.py b/unix/variant/sim_vdisk.py
index 321617f5..16097655 100644
--- a/unix/variant/sim_vdisk.py
+++ b/unix/variant/sim_vdisk.py
@@ -75,9 +75,12 @@ class SimulatedVirtDisk(vdisk.VirtDisk):
     def import_file(self, filename, sz):
         # copy file into another area of PSRAM where rest of system can use it
         print("sim-virtdisk: read %s" % filename)
-        contents = open(SIMDIR_PATH+filename, 'rb').read(sz)
+        with open(filename, 'rb') as f:
+            contents = f.read(sz)
         from glob import PSRAM
-        PSRAM.write_at(0, sz)[:] = contents
+        runt = (4 - sz % 4)
+        sz = sz + runt
+        PSRAM.write_at(0, sz)[:] = contents + bytes(runt)
         return sz
 
 vdisk.VirtDisk = SimulatedVirtDisk