D-Link DIR-615 C2 64MB memory mod

To make memory upgrade do the following:

• DO NOT DO THIS UNLESS YOU HAVE GOOD SOLDER SKILLS!
  YOU CAN DESTROY PCB PADS AND BRICK YOU DEVICE!
  TRAIN ON BROKEN HARDWARE FIRST!

1. Find a PC3200 DDR 512MB PC memory with 8 TSOP-66 chips on it (Each chip has 64MB size and 8M x 4bank x 16bit memory organization) or 256 SODIMM with 4 memory chips. You should use only 4bank x 16bit memory chips! You are lucky if you got 16M x 4bank x 16bit (128MB) chip - use it! (NOTE: You typically need to match the manufacturer of the memory chips, with the exception of cross-branded chips, for example Hynix/Winbond, as used in this article)
   
2. Desolder all chips using rose alloy
   
3. Desolder chip from DIR-615 pcb and solder new one. Here is the list of operations:
   

• Tools and materials:
  
  
  
  
• This is photo of original memory chip:
  
  
  
  
• Flux applied:
  
  
  
  
• Rose alloy melted to lower melting point temperature:
  
  
  
  
• Old original 32MB chip desoldered:
  
  
  
  
• PCB pads cleaned using soldering iron & cotton swab:
  
  
  
  
• New 64MB chip soldered (use a lot of good flux and clean it after soldering)
  
  
  
  

• There is no need for software changes. Original u-boot detects memory size automaticaly. Just double check your soldering for shorts and other defects before powering up device.
  
  
• This is the result:
  
  

  root@dir615c2:/# free
                 total         used         free       shared      buffers
     Mem:        62112        22164        39948            0         1356
     Swap:       507176            0       507176
    Total:       569288        22164       547124