diff --git a/README.md b/README.md
index a649a70..38cfc39 100644
--- a/README.md
+++ b/README.md
@@ -54,13 +54,11 @@ E.g. for CAT B26 (bootkey is `#`) the dumping command is: `python uniflash.py -l
 
 ### SC6531C
 
-SC6531C is a single-FDL variant. Here, if your model doesn't require signed FDLs, you need to specify `sc6530_generic` target and typically 8MB length, for instance, for Alcatel OT-2051D the boot key is Call key and the command to dump is: `python uniflash.py -t sc6530_generic -l 0x800000 dump ot2051d.bin`
-
-**Note**: for SC6531C, only readback is supported as of now.
+SC6531C is a single-FDL variant. Both readback and flashing are now supported here. Here, if your model doesn't require signed FDLs, you need to specify `sc6530_generic` target and typically 8MB length, for instance, for Alcatel OT-2051D the boot key is Call key and the command to dump is: `python uniflash.py -t sc6530_generic -l 0x800000 dump ot2051d.bin`
 
 ### SC6531D and lower
 
-For now, SC6531DA and other variants of SC6531 chipset older than SC6531CA are not supported.
+For now, SC6531DA and other variants of SC6531 chipset older than SC6531C are not supported or at least tested. You may verify the support by using the same `sc6530_generic` target as for SC6531C.
 
 ### Add your own targets
 
diff --git a/uniflash.py b/uniflash.py
index 4bc239c..2059bd7 100644
--- a/uniflash.py
+++ b/uniflash.py
@@ -10,6 +10,7 @@ import unicmd
 UNISOC_VID = 0x1782
 UNISOC_PID = 0x4d00
 UNISOC_FLASH_BASE_ADDR = 0x10000000
+UNISOC_FLASH_BASE_ADDR_OLD = 0x30000000
 MAX_PKT_SIZE = 1024
 bSize = 512 # read block size
 genTimeout = 120000
@@ -98,7 +99,7 @@ def send_file_to_addr(fname, faddr, fdlBooted = False, flashMode = False, fbs =
     print('\nEnding data transfer...')
     resp = reqresp(unicmd.cmd_data_end(), fdlBooted)
     rcode, rlen, r = unicmd.resp_decode(resp, fdlBooted)
-    if not flashMode or (rcode != unicmd.BSL_FLASH_CFG_ERROR and rcode != unicmd.BSL_WRITE_ERROR): # on flashing, ignore 0xA2 and 0xA4 errors
+    if not flashMode or (rcode != unicmd.BSL_FLASH_CFG_ERROR and rcode != unicmd.BSL_WRITE_ERROR and rcode != 0xFF): # on flashing, ignore 0xA2, 0xA4 and 0xFF errors
         assert rcode == unicmd.BSL_REP_ACK, 'Could not finalize data transfer, response code is %X' % rcode
     print('Data transfer successful')
 
@@ -237,6 +238,11 @@ if __name__ == '__main__': # main app start
     fdl1Label = 'FDL1'
     fdl2Label = 'FDL2'
 
+    # override flash base addr based on the target
+
+    if target.startswith('sc6530'):
+        UNISOC_FLASH_BASE_ADDR = UNISOC_FLASH_BASE_ADDR_OLD
+
     if args.flash_noremap == True:
         print('Flash remapping disabled')
         UNISOC_FLASH_BASE_ADDR = 0