Both 22251 and 23088 have a bug in which the rwdata partition gets full and the unit exhibits that behavior. All known methods for recovery are located here → APIM Sync Settings Not Saving, VER_ERR08 Errors, Cannot Perform Master Reset or Upgrades/Updates (Solved)
If none of those work, we do not have anything else to recommend.
A user recently shared his experienced, where after 10-20 minutes of trying the SR → SR → MR combo the MR completed correctly, which enabled him to run the rwdata cleaner and then go to the latest version (which has the bug fixed).