Native Dune UI provides built-in firmware upgrade mechanism. When the upgrade fails, error message is reported to the user in UI. This message contains error code. Below is the list of possible error codes. 101 Error reading/writing NAND flash memory. 225 Error reading firmware file. 226 227 228 229 230 231 232 233 234 235 236 221 222 223 224 238 239 241 Invalid firmware file. 201 202 Error reading firmware file. 203 Invalid firmware file. 204 205 Error reading firmware file. 206 2061 2062 Invalid firmware file. The firmware is not suitable for the STB model or it is not allowed to be installed on top of the firmware currently installed on the STB. 207 Invalid firmware file. 208 Unsupported firmware file format. Probably outdated firmware is tried to be installed. 209 Invalid firmware file. 2091 Invalid firmware file. Too old firmware version is tried to be installed. 210 211 212 218 Invalid firmware file. 219 240 Firmware version is incompatible with hardware revision. There is no support for STB's hardware revision in the firmware which is tried to be installed. 220 Invalid firmware file. 213 214 Error reading firmware file. 215 216 Invalid firmware file. 217 Invalid firmware file size. 301 302 303 401 402 403 Error reading/writing NAND flash memory. 501 Error reading firmware file. 502 503 Internal error. 504 Error reading firmware file. 505 507 508 Error reading/writing NAND flash memory. 601 Error reading/writing NAND flash memory. 701 801 Error reading firmware file. 901 Error reading/writing NAND flash memory. 1001 1002 1003 1101 1102 1201 1202 1203 Internal error. 1301 Error reading firmware file. 1302 Internal error. 1303 1401 1402 1403 1404 Error reading/writing NAND flash memory. 2409 Error reading/writing NAND flash memory. 2417 Invalid firmware file. 2410 2412 Error reading/writing NAND flash memory. 2440 2441 2442 2443 2444 2493 2491 2492 Internal error. 2439 Error reading/writing NAND flash memory. 2401 2402 Error reading firmware file. 2403 2407 Invalid firmware file. 2411 Error reading/writing NAND flash memory. 2404 2405 Error reading firmware file. 2406 Invalid firmware file. 2413 2303 Error reading/writing NAND flash memory. 2390 Internal error. 2305 2306 Error reading firmware file. 2304 2307 2308 2309 2301 2302 Error reading/writing NAND flash memory. 1501 Internal error. 15101 Error downloading firmware file via multicast. 15201 Error downloading firmware file via DVB. 15102 Error downloading firmware file via multicast. 15103 Error downloading firmware file via multicast. The firmware is too big. 15202 Error downloading firmware file via DVB. 15203 Error downloading firmware file via multicast. The firmware is too big. 1502 1503 Error downloading firmware file via unicast (HTTP). 1504 1505 1507 Internal error. 16101 Error downloading firmware file via multicast. 16201 Error downloading firmware file via DVB. 1601 Error downloading firmware file via unicast (HTTP). 1602 Error downloading firmware file via unicast (HTTP). Probably firmware file is not compressed correctly. 1603 Error downloading firmware file via unicast (HTTP). Uncompressed firmware file is too big. 1701 Error reading firmware file. 1901 Error reading/writing NAND flash memory. 2001 Error reading firmware file. 20021 Internal error. 20022 Error reading firmware file. 20023 Internal error. 2002 2101 Error reading firmware file. 2102 Invalid firmware file. The file has been corrupted/modified. 21031 Error reading firmware file. 21032 2103 Internal error. 2104 Invalid firmware file. The file has been corrupted/modified. 21051 Internal error. 21052 Invalid firmware file. The file has been corrupted/modified. 2201 Internal error. Failed to start upgrade. 2202 2203 Upgrade is cancelled by the user.