PASS1-102_b (#22)

* PASS1-102: Fix backwards microSD issue

Found that `ErrorCode` in `SD_HandleTypeDef` was not reset after a failure.
Updated `HAL_SD_Init()` to reset it before attempting initialization.

* Switch back to hard-coded path for now

ports/stm32/boards/Passport/modules/actions.py

@@ -934,7 +934,7 @@ async def verify_microsd_backup(*A):
 
     with imported('export') as exp:
         fn = await file_picker('Select the backup to verify.',
-            suffix='.7z', max_size=exp.MAX_BACKUP_FILE_SIZE, folder_path=get_backups_folder_path())
+            suffix='.7z', max_size=exp.MAX_BACKUP_FILE_SIZE, folder_path='/sd/backups')
 
         if fn:
             # do a limited CRC-check over encrypted file
@@ -972,7 +972,7 @@ async def restore_microsd_backup(*A):
 
     # Choose a backup file -- must be in 7z format
     fn = await file_picker('Select the backup to restore and then enter the six-word password.',
-        suffix='.7z', max_size=10000, folder_path=get_backups_folder_path())
+        suffix='.7z', max_size=10000, folder_path='/sd/backups')
 
     if fn:
         with imported('export') as exp: